SEC536: Adversarial AI - Penetration Testing AI Systems


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Contact UsThreat intelligence reports and security advisories from BeyondTrust, Google Threat Intelligence Group (GTIG), and Mandiant describe exploitation of a critical flaw affecting BeyondTrust Remote Support up to and including version 26.2.3. This exploitation was allegedly conducted by a threat actor associated with the Chinese government, months before the vulnerability was patched. CVE-2026-102764, CVSS score 9.3, allows a remote attacker to perform file operations on the appliance because internal components do not adequately validate the origin of received messages. The patch was released on October 8, but exploitation seems to have begun on August 29, 2026. Exploitation of "another security device provider" became public on September 27, and BeyondTrust threat hunters contained an affected customer's instance the following day; Mandiant shared its own report on September 30, confirming BeyondTrust's findings. BeyondTrust describes this flaw with CWE-290, Authentication Bypass by Spoofing, and is withholding technical details while self-hosted appliances are still being patched. Remote Support SaaS customers received the fix on October 9, and the company urges users of self-hosted Remote Support or Privileged Remote Access (PRA) appliances to patch immediately. The patch has been released for PRA as well because it shares affected code, but BeyondTrust has not identified a way for an attacker to exploit this flaw in PRA. Mandiant's name for the threat actor correlated with this activity is ARMORY CASTLE, whose targets often include "legal services, SaaS providers, business-process outsourcers, technology companies, and government." After patching, BeyondTrust recommends users reduce exposure of their remote access appliance, forward appliance syslog and session events to SIEM, hunt for signs of the threat actor's behavior, and "rotate every credential the appliance stored or injected."

Remote support services like BeyondTrust are likely a critical success factor for your help desk. And these services are now an active target. Because the discovered exploits predate the fix, once you've made sure that your implementation is fully updated, grab the IoCs from the Google/Mandiant blog and make sure that you're clean. Next — and here's where it gets harder — go through the targeted compensating controls to supplement the patch. These include network restrictions, credential rotation, configuration review, phishing-resistant MFA, setting the default Jump Admin policy to No Access, and reducing permissions. Did I mention making sure logs go to your SIEM and implementing monitoring? In other words, harden the environment. While you've got all those plates spinning, have someone take a look and see if the hosted SaaS version of your remote support client is viable, as it's one less component to keep updated.

Privileged access management is often one of the key products required to secure developer supply chains. It is a bit ironic that this tool is now itself a supply chain issue. I understand that BeyondTrust is holding back details at this point, but I hope they will provide a detailed post-mortem later to retain customer trust.

A compromised remote support appliance can become an attacker’s privileged jump box into the rest of the enterprise. BeyondTrust and Mandiant describe attackers harvesting credential-vault material, establishing persistence, reaching downstream systems, and deleting local logs. There’s another detail I find especially instructive: BeyondTrust reports that high-severity detections fired in real time, but a third-party triage tool automatically closed them as false positives. The company ultimately found the intrusion through a separate intelligence-driven hunt. That’s a potent reminder that an automated “benign” verdict isn’t necessarily ground truth. Patch the appliance of course, but also scrutinize privileged sessions, preserve telemetry off-device, and investigate whether brokered credentials need rotation. Kudos to BeyondTrust and Mandiant for sharing these important details. Privileged access and detection automation both require independent checks.

I have seen many organizations where this system is the only system exposed to the internet from their DMZ, outside of traditional VPNs. I can see where an attacker would want to compromise this device. In some places, it has more credibility than your run-of-the-mill RMM, while still having elevated access. Remote management systems are probably tier zero, like your routers, VPNs, and domain controllers. Treat them as such. Their target being legal is even more concerning, given how much sensitive data law firms hold.
BeyondTrust
The Record
SecurityWeek
CyberScoop
Late last week, ConnectWise published an advisory noting that it "identified unauthorized access to application identities within the ConnectWise Cloud Backup [formerly known as SkyKick] environment." In response, ConnectWise decided to temporarily suspend service to several ConnectWise application identities: ConnectWise Cloud Backup; ConnectWise Cloud Management; ConnectWise Cloud Management - MS Teams; ConnectWise Cloud Management - Exchange Online; ConnectWise Cloud Management - MS Graph; ConnectWise Cloud Management - Partner Center; and ConnectWise Cloud Management - SharePoint Online. ConnectWise has provided users with a list of actions to take, including to "verify the status of the listed application connections and keep affected applications disabled until ConnectWise provides restoration instructions; preserve available sign-in and audit records promptly, while taking any urgent containment action; review application and user authentication, application credentials and federation trusts, directory roles, owners, consent grants, and recent policy changes; check for unauthorized mailbox forwarding, inbox or transport rules, and delegated mailbox access; [and] investigate any other identities changed or used during suspicious activity; … disabling the original applications does not remove those separate access paths." ConnectWise has also provided a "detailed workflow" with more granular guidance. Researchers at Huntress say the threat actors have used a ConnectWise Cloud Backup Microsoft 365 credential to gain unauthorized access to customers' M365 environments. "Huntress has high confidence that the threat actor abused ConnectWise Cloud Management applications for Exchange Online, Microsoft Teams, and SharePoint Online, Cloud Backup, MS Graph, and Partner Center." Huntress also cautions users to "not re-enable affected ConnectWise applications until ConnectWise confirms all credentials have been reset."

This incident highlights one of the major challenges organisations face when integrating third-party applications into their cloud environments. We often focus on securing user accounts with strong passwords and multifactor authentication, but we also need to pay close attention to the permissions and privileges granted to applications, and nowadays to AI agents. A compromised application identity can potentially provide attackers with access to multiple systems and sensitive information without needing to compromise an individual user's account. Organisations should regularly review which third-party applications have access to their cloud environments, what permissions those applications have, and whether that access is still required. Trusting a supplier should not mean giving its applications unrestricted access to your systems.

Remember that pitch on how you could get your M365 environment fully backed up, and you wound up implementing ConnectWise? Here we are with a third-party issue. At this point your ConnectWise services should not be enabled. Right now, while you don't get new backups, the existing backups remain encrypted, preserved, and isolated. ConnectWise has to finish rotating credentials and developing guidance moving forward to prevent recurrence. While that is sorting itself out, review your M365 environments for unexpected accounts and unauthorized privileges in concert with your MSP. It's too soon to be second guessing your choice to use ConnectWise versus something else.

Oh, that is big, big bad. ConnectWise, what is going on here? One compromised service principal gets *many* customers compromised? I am wondering how this even happens in the first place; shouldn’t there be a more isolated set of credentials for backups? The more this happens, the more customers will wonder where they are going to put their data. What's even scarier: You have to think that customers will try to create their own RMMs and backup systems with LLMs, and while it seems like a good idea, is it actually safer?

Here’s a trust relationship we need to examine much more closely: A cloud backup provider’s application identity can have extensive access to customers’ Microsoft 365 environments, often without any human login or MFA challenge. Once attackers obtain that application’s credentials, they inherit whatever privileges customers have granted it. And disabling the original connection doesn’t necessarily evict the attacker. New application secrets, altered role assignments, and malicious mailbox rules may survive the shutdown of the compromised integration. Huntress’s investigation makes these persistence risks painfully concrete. Audit what third-party applications can do in your cloud environment, review their credentials and consent grants, preserve the logs, and follow the vendor’s containment guidance. One compromised integration can become many customers’ problem. And when the backup service itself must be suspended, customers also lose access to a system intended to help them recover from disasters. That’s a heck of a trust dependency.

The API credential ConnectWise failed to protect is like a single master key into all of their customers’ services. Any risk assessment should have said, "Don’t do it that way, or if you absolutely must, go to very rigid security controls to prevent compromise." Failing to do so is just like a traditional software vendor embedding hard-coded passwords in the code.

The lesson for the rest of us is that such credentials should be stored only in high security modules (HSMs) that permit their use but not disclosure or copying.
The Register
The Record
SCWorld
Help Net Security
The Hacker News
ConnectWise
ConnectWise
Huntress
BAE Systems Inc. — a US defense contractor and independent subsidiary of British defense contractor BAE Systems plc (standing for British Aerospace) — has been impacted by a cybersecurity incident causing outages for IT managed by the company, including infrastructure for the US Bankruptcy Noticing Center (BNC). The US Federal Courts website published a notice on October 15 explaining that "all access to the BNC systems and websites that BAE operates on behalf of the judiciary and the related bankruptcy noticing process are unavailable at this time, including bnc.uscourts.gov, bankruptcynotices.uscourts.gov, notices.uscourts.gov, and the National Creditor Registration Service." The BNC is also currently unable to produce and distribute bankruptcy notices for bankruptcy courts. This disruption began on October 9, according to a parallel announcement from the US Bankruptcy Court for the Eastern District of Texas. Many courts have published their own announcements that local residents should check for specific updates and instructions on how operations will proceed during the disruption; on the US federal courts website, courts can be searched by type, location, and name.

When a contractor’s cybersecurity incident interrupts a nationwide court notification system, the consequences extend far beyond the affected servers. Bankruptcy notices communicate important information to people and organizations navigating difficult financial and legal circumstances. Interrupting that process can create uncertainty precisely when people need clarity about their obligations and rights. This is why continuity planning for outsourced systems must extend beyond restoring the technology. How will essential notices be issued while the service is unavailable? What alternative processes have been tested? And how will affected parties know where to obtain reliable information? Outsourcing a critical government function doesn’t eliminate the responsibility to keep that function operating. Cyber resilience ultimately needs to protect the people who depend on our institutions.

Another example of how third-party dependencies can have a big impact. The question is, are you prepared for outages in your third-party service providers? It's not just continuity/resumption of business — consider notifications (internal and external), how long before data gets stale, and when that becomes critical. Work all these things out ahead of time. Look to see if you've implemented available HA or other options which help bridge any service gaps. As Ed says, this is about resilience and protecting the people who depend on us.

While this was not a DoD contract, this was a defense contractor. In July, the US DoD delayed Phase 2 of the Cybersecurity Maturity Model Certification (CMMC) program that would require third-party security assessments for DoD contractors starting in November. This makes a good argument for getting CMMC back on track, but the NIST requirements are still required for all government contractors, and there should be penalties for this failure.

This incident is another reminder that your organisation's ability to deliver its services can be seriously impacted by a cyberattack against one of your suppliers. It doesn't matter how secure your own systems are if a critical third party is unavailable and you have no alternative way of operating. Organisations need to identify which suppliers they depend on for critical services and ensure their business continuity and cyber resilience plans take account of those suppliers becoming unavailable. Having a contract or service-level agreement with a supplier is of little comfort when that supplier is unable to deliver the service your organisation depends upon.
Although specifics are limited aside from an offline website, this event serves as a vital reminder for system owners to incorporate third-party vendors into their security and risk management processes. Reviewing your current SLAs is a crucial first step.
US Courts
The Register
SecurityWeek
CyberScoop
The Record
Last week, multiple vendors released updates for industrial control systems (ICS) products. Siemens published 17 advisories, which include fixes for some of the vulnerabilities, and suggested mitigations for others, which users are urges to apply until patches are available. On Monday, October 19, Siemens confirmed “that there is an active exploitation of CVE-2026-110936, a DLL side-loading vulnerability in Siemens Software Center." The vulnerability is addressed in Siemens Software center version 4.0.9.8 and published in an associated advisory, SSA-580366, on October 15. Schneider Electric published two advisories, both high severity: CVE-2026-96434 involves use of unmaintained third-party components and affects all versions of Pro-face STW6000 and Harmony STW6; CVE-2026-102250 involves insufficient verification of data authenticity and affects Sage RTU 1410, 1430, 1450, 2400, 3030 Magnum, and 4400. Rockwell Automation published one advisory that addresses two high severity vulnerabilities in 1732E ArmorBlock: CVE-2026-12655 (CVSS score 8.8) is an authentication bypass by capture replay issue that could be exploited to change a device's web server password; CVE-2026-12656 (CVSS score 8.7) is an allocation of resources without limits or throttling issue that could be exploited to cause denial-of-service conditions. In addition, the US Cybersecurity and Infrastructure Security Agency (CISA) published seven ICS advisories last week, including one for Swann SWIFI-SE2KIC camera vulnerabilities and another for a privilege escalation issue in Inductive Automation’s Ignition product. Germany's CERT@VDE (Germany) has published an advisory addressing a privilege escalation vulnerability in Bender’s Customer&Partner platform." SecurityWeek also notes that multiple vendors published advisories over the past month: Moxa, Honeywell, Hitachi, Hitachi Energy, Johnson Controls, and ABB.

Remember those OT/ICS systems which take a licking and keep on ticking? You need two things here: plans for how they are being kept updated, and for how they are protected. The owners are not going to be keen on rapidly applying updates, which is why the protections are key. Verify how they are isolated so only authorized systems can interact, and make sure you've got monitoring and alerting, there are systems which understand the proprietary protocols these talk and will detect anomalies as well as new/unexpected traffic, which you need to investigate. Remember, availability is king, downtime is a nasty four-letter word, and the system owners don't want to be compromised any more than you do. Odds are, these are systems that really are keeping the lights on.

While patching is inefficient, in the face of poor code quality, it is essential. This is as true for OT as it is for IT.
SecurityWeek
Siemens
Siemens
Siemens
SE
Rockwell Automation
CISA
CERTVDE
One high-severity and three medium-severity fixed flaws in Plex Media server were under exploitation in the wild within a day of a researcher publishing proof-of-concept (PoC) details for the exploit chain. When Plex first published the September 1 advisory recommending users update to Plex Media Server 1.43.3 and Plex Desktop 1.115.0 (described in NewsBites 28.67), these four flaws were still awaiting CVEs and descriptions. CVEs were assigned on September 23; a researcher, "zmain," published the "Plex2Shell" chain PoC on October 16, and on October 17 a separate researcher, "boredhackerblog," observed in-the-wild exploitation in honeypots, including attempts to drop a cryptocurrency miner and potentially set up a residential IP proxy. The chain consists of two server-side request forgery vulnerabilities (CVE-2026-96652 and CVE-2026-96655, both with CVSS score 5.3), improper neutralization of encoded URI schemes in a web page (CVE-2026-96654, CVSS score 6.9), and external control of file name or path (CVE-2026-96656, CVSS score 8.6). Plex users should ensure they are using version 1.43.3 or later; boredhackerblog also notes that zmain has published detections for this exploitation.

Here’s a reminder that your home media server is still a server, even if its primary job is helping you enjoy movies and television. Within about a day of the Plex2Shell proof-of-concept release, researchers were observing attempts to install cryptocurrency miners and residential proxy software on vulnerable systems. That second payload is particularly concerning: Attackers can potentially turn your home Internet connection into an exit point for other people’s malicious activity. If you operate Plex, verify that it’s updated, review its Internet exposure, and look for evidence of compromise rather than assuming patching alone is sufficient. The Internet doesn’t care whether your server is in a corporate data center or sitting next to your TV.

You've got that Plex server you're using to stream content to your devices, and remember how you set it so that your buddy across town could check some of your stuff out too? What do you want to bet Shodan has your device and information available — go look! Grab another cup of coffee, and as Ed said, update to the latest version, review your external access (port 32400), and check for the IoCs (in the boredhackerblog). If they can use the flaw to deploy a crypto miner, they can use it to deploy something else, so if you don't need to expose the service, patched or otherwise, don't. Your Plex server has three things they want: cycles, storage, and Internet access.

This vulnerability was exploited pretty much the same day details about the issue became public. Exposing a media server like Plex is always dangerous and should be avoided. But even if you do not expose Plex, update now. If your Plex server is exposed to the internet: assume compromise.

These media servers became very popular during the pandemic to watch movies together remotely. To do this in the way that Plex does it, unfortunately you’ll need to expose a non-HTTP port to the internet. This is where it can get a bit bad, since many of these systems are internal to individual home networks, aren't segmented inside the network, and may not be maintained. If you are a Plex user, make sure you update it automatically — my advice: do it daily. Could that break your system? Yes, but given how quickly vulnerabilities are being found along with PoCs, you really don't stand a chance at home.
Ars Technica
SecurityWeek
The Hacker News
zmain
boredhackerblog
On Wednesday, October 14, F5 published a security advisory that addresses 11 vulnerabilities in NGINX. CVE-2026-15176 and CVE-2026-93479, both with CVSS scores of 9.2, are heap-based buffer overflow issues in NGINX Plus and NGINX Open Source. SCWorld writes that "these flaws can be exploited by unauthenticated attackers through crafted HTTP requests, potentially leading to denial-of-service conditions or remote code execution if Address Space Layout Randomization (ASLR) is disabled or bypassed. The vulnerabilities are triggered under specific configurations involving the `alias` directive and the `$request_filename` variable, or when regular-expression capture variables are used in certain ways within the `map` directive." A third critical vulnerability, CVE-2026-97205, CVSS score 9.2, is a use-after free issue in the ngx_http_core_module that could be exploited to bring about memory corruption or a worker process crash. The advisory also addresses vulnerabilities in NGINX Instance Manager, F5 WAF for NGINX, NGINX App Protect WAF, F5 DoS for NGINX, NGINX App Protect DoS, NGINX Gateway Fabric, NGINX Ingress Controller.

F5 is the primary maintainer of NGINX after acquiring NGINX Inc. in 2019. In other words, this isn't just about your F5 appliances. While F5 lists some mitigations to the NGINX flaws, it's far better to update. Fortunately, it looks like the updates to the relevant NGINX software include all the fixes. Unfortunately, you're going to have to check all your NGINX, BIG-IP and F5 products for applicable updates. This would be a good time to verify you're on the most current supported versions of these products.

There have been a few recent vulnerabilities in NGINX. They usually only affect very specific configurations. But make sure you do not miss any of the updates. It is easy to miss that a particular update is new and different from the one you looked at a couple of days ago.

NGINX is such a widely used web server. Personally, I’ve been concerned about it for quite some time and have been using alternatives like Caddy. NGINX is also a Kubernetes ingress controller, which is daunting to consider given how widespread Kubernetes is. While I know F5 has purchased the product, its beginnings are questionable. I'm also concerned about the FreeNGINX project. Either way, if you use NGINX, you should update your systems often. The good news is that this is a non-standard system configuration.
The Florida Department of Highway Safety and Motor Vehicles (FLHSMV) has begun notifying people whose data were compromised in a breach last month. FLHSMV became aware of the breach on September 4, at which time the department took steps to mitigate the incident, brought in third-party cybersecurity experts, and launched a coordinated investigation with the Florida Digital Service and Florida Department of Law Enforcement. On September 11, FLHSMV wrote that the investigation "determined that a criminal actor was able to take advantage of a single Plant City Police Department user’s credentials that were improperly housed on the employee’s personal electronic device." The investigation also indicates that the compromised data include "driver license and motor vehicle data, to include document images, and other personal information." While FLHSMV is sending letters to all affected individuals, the department does not have contact information for all former Florida residents whose data were still in the department's systems. Individuals who do not receive a notification letter yet and are concerned that their information may have been compromised can find out by emailing FLHSMV.

It is worrying that access to such sensitive personal information could apparently be compromised because an employee stored their credentials on a personal device. This highlights why organisations need to look beyond their own systems when managing access to sensitive data. Strong authentication, appropriate access controls, restricting access to only approved and trusted devices, and monitoring for unusual activity should apply regardless of who owns the device or employs the person accessing the data. Remember, your security is only as strong as your weakest link.

The Florida FLHSMV cannot contact individuals whom they no longer have contact information for. If you lived in Florida and still have that vehicle you registered there, or if you had a Florida driver's license, assume the information related to that license or registration has been compromised; you want to be looking at your ID/credit monitoring for alerts for your information being exfiltrated. This would be a good time, whether in or out of scope of this incident, to make sure that you are monitoring everything (remember that credit card you replaced and didn't update?) and that you didn't miss any alerts that matter.

Continued reliance on reusable credentials for mission critical and/or public network applications is reckless. The managers responsible need a year or two in the penalty box.
Gov Delivery
Ars Technica
Gadget Review
FLSHMV
FLSHMV
Netherlands-based multinational grocery store company Ahold Delhaize has published an update regarding a previously disclosed cybersecurity incident that has disrupted systems at multiple stores in the EU and the US. Ahold Delhaize disclosed the incident on Monday, October 12. After discovering the incident, the company engaged third-party cybersecurity experts. A subsequent investigation has determined that the incident was caused by the activity of malicious threat actors. The company proactively took certain systems offline, affecting most of Ahold Delhaize's brands — the company operates stores that include Food Lion, Stop & Shop, Giant, and Hannaford in the US; Profi, Albert Heijn, Mega Image, Delhaize, Gall & Gall, Alpha-Beta, Maxi, and Etos in Europe; and Super Indo in Indonesia. While stores have remained open to customers, the company is restoring disrupted services in phases; online shopping is still not available at all stores. In addition to notifying the Dutch National Cyber Security Centre (NCSC) within 24 hours of discovering the malicious activity and providing them with updates, Ahold Delhaize has filed a formal report with the Dutch police.

You may recall I was not happy about Ahold Delhaize's notification regarding offline services. This is much better — they are publishing ETAs for systems, where known, as well as acknowledging what remains offline/in-progress even when they don't have an ETA. Some sites have a list of services with a up/down indicator, while AD is describing status in text. Both work, and the point is to notify and keep people updated during an outage without that notification overshadowing or impacting the incident recovery and response.

This makes two attacks against European grocery store chains in one week. So far, I have not seen any indicators that the attacks are related. The food supply chain is critical infrastructure but is not always treated like such.
A second attack in two years suggests systemic risk that goes beyond bad actors. Although official details are limited to generic references to "malicious actions," recurring breaches signal an urgent need for executive leadership to perform an end-to-end evaluation of their information security and governance framework.
Officials in Anne Arundel County, Maryland, have disclosed that data from government systems were stolen during an August 2026 cybersecurity incident. A spokesperson for the county said that they detected anomalous activity on August 28, and that subsequent investigation "determined that an unauthorized actor gained access to a limited number of systems and copied certain files from those systems." Investigators are attempting to determine whether any of the stolen data contain information about the county's residents, who number over 600,000. US Federal agencies with offices or headquarters in Anne Arundel County include the Defense Department, the Internal Revenue Service, the Environmental Protection Agency, the Social Security Administration, the Department of Agriculture, and the US Coast Guard. Ransomware threat actors have claimed responsibility for the attack and have threatened to leak 2.6 terabytes of data if they do not receive $2 million. Anne Arundel County was the victim of a separate cybersecurity incident in early 2025; it recently published a statement regarding its plan to notify affected individuals about that breach. The county has released a statement with updates about both incidents.

This is a tale of two incidents. The first was detected in May of 2025, and the investigation and review of systems just finished, with notices being sent to affected individuals last week, 17 months later. The second occurred August 28, 2026, which they are investigating now. This has got to be rough; while the Rhysida ransomware gang is taking credit for the second incident, it's not clear if the attackers took advantage of mitigations not fully implemented or other new weaknesses, or if maybe the second incident was discovered while investigating the first. No matter how you look at it, this has to be rough on the team. I hope they publish some lessons learned that we can leverage. In the meantime, tighten up those investigation timelines, particularly implementing remediations/hardening. Make sure that you fully implement countermeasures, such as MFA, monitoring, WAF (defense in depth), and risk-based updates. Our adversaries are using tools to find weaknesses at an ever-increasing rate, forcing us to use more aggressive approaches to raise the bar. In the long term it's worth it, so make sure you're keeping senior management onboard while your team implements.
The occurrence of two separate incidents over a two-year period highlights a potential lack of security governance by county leadership. The initial incident required more than a year for review, with notifications only recently issued. Expediting the current investigation is critical, especially given that the county seemingly failed to implement necessary improvements to its information security program after the first event.

Ransomware continues exploiting failures to use strong authentication, failures to structure enterprise networks, and failures to implement least privilege WRITE access control. Years into the epidemic we should not be accepting these risks.
SANS Internet Storm Center Stormcast Tuesday, October 20th, 2026
Plex2Shell RCE Exploited; Broadcom eCos Wi-Fi RCE; OVHcloud CLI Compromised; Exchange Issues After October Updates; AI Agent Containment; VBA in DWG YARA
https://isc.sans.edu/podcastdetail/10142
Today's episode covers an actively exploited unauthenticated remote code execution chain in Plex Media Server, unpatched Broadcom eCos Wi-Fi flaws that allow code execution on access points without connecting, an infostealer slipped into the OVHcloud command line tools, Exchange Server instability after the October 2026 Windows updates, how to contain AI agents, and a YARA rule for orphaned VBA projects in AutoCAD DWG files.
Small Agents, Smaller Blast Radius: Controlling What AI Can Do
Mark outlines techniques to restrict what AI agents can do, including limiting permissions, using containers, and planning for AI vendors retiring older models.
https://isc.sans.edu/diary/33430
Orphaned VBA Projects Inside DWG Files: YARA Rule
Didier Stevens follows up on hidden Visual Basic for Applications projects in AutoCAD DWG files with a YARA rule to detect them.
https://isc.sans.edu/diary/33434
Broadcom eCos Wi-Fi Remote Code Execution Vulnerability
Quentin Kaiser shows that an attacker in Wi-Fi range can execute code on Broadcom eCos access points without WPA authentication and steal the WPA key. Broadcom has not issued a CVE, and many ISP-provided access points are affected.
https://quentinkaiser.be/security/2026/10/16/one-parser-two-bugs/
OVHcloud Command Line Tools Compromised
For a few hours on Friday, compromised versions of the OVHcloud CLI shipped an infostealer. Update to version 0.16.0, released after the compromise, and pin package hashes.
https://github.com/ovh/ovhcloud-cli/issues/300
Plex2Shell Vulnerability (Exploited!)
A chain starting with server-side request forgery (SSRF) to loopback lets attackers steal admin tokens and run code on Plex Media Server without authentication (CVE-2026-96652, CVE-2026-96654, CVE-2026-96655, CVE-2026-96656). It is already exploited; patch now and assume compromise if your server is exposed.
https://zmain.info/blog/plex2shell
Exchange Servers May Become Unstable After the October 2026 Windows Updates
Microsoft recommends a registry change rather than uninstalling the update on on-premises Exchange Server.
NGINX ngx_http_core_module Vulnerability (CVE-2026-15176)
https://my.f5.com/manage/s/article/K000162416
My Upcoming Classes
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Secure Code at Agent Speed. AI agents write and commit code in minutes. Security reviews built for human pace can't sit inside that loop. This infographic shows where checks belong across the AI-SDLC, using a 4-stage scanning strategy from agent session to repository. It also covers 5 criteria for tools developers to keep turned on.
Webinar | SANS 2026 Cloud Security Survey Insights: Navigating the Evolving Landscape of Threats, Tools, and Priorities | Wednesday, October 21 | Join us for this exclusive webcast to explore the survey findings, gain practical insights, and benchmark your organization’s approach to cloud security.
Webinar | AI Summit Fall Solutions Track 2026 | Tuesday, November 3 | Explore real-world approaches to applying AI in cybersecurity programs, focusing on how to move from theory to measurable impact.
Webinar | Agentic AI Threats & SOC Autonomy | Thursday, November 5 | Explore new survey data on how security teams are responding to this shift, from detecting agentic threats like prompt injection and non-human identity compromise to the barriers still stalling SOC autonomy.