CVE-2026-94023: Eclipse ThreadX module delete dispatch ownership enforcement

CVE-2026-94023 · Severity: info · Published 2026-10-20

Eclipse ThreadX is a real-time operating system kernel used in embedded and IoT devices. A low-privilege module can exploit the Module Manager's dispatch layer to destroy kernel objects (queues, semaphores, mutexes, timers, pools) that belong to the system or other modules, breaking inter-module synchronization and causing those waiting on deleted objects to be awakened with error conditions. This undermines system stability and could leave the device in an unrecoverable state.

Technologies: Eclipse ThreadX. Vendors: Eclipse.

Quick answers

Is CVE-2026-94023 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-94023 being exploited in the wild.
How severe is CVE-2026-94023?
Informational severity, published 20 October 2026.
Which products and versions are affected?
Eclipse ThreadX 6.0.1 to 6.5.1.202602a.
Is there a fix for CVE-2026-94023?
Yes: fixed in ThreadX 6.5.2.202603. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-94023 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-94023?
Check whether you run Eclipse ThreadX at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: ThreadX 6.5.2.202603

Technical details

The Module Manager's delete dispatch functions fail to verify object ownership before performing irreversible deletion; ownership is checked only after the object is already unlinked from the system and all cleanup performed. Additionally, ownership verification involves a privileged read from an attacker-controlled address offset, causing potential out-of-bounds reads and writes through pointers from untrusted memory. A module with access to the delete API can supply a pointer to any kernel object and have it destroyed, bypassing synchronization semantics.

Affected products

  • Eclipse ThreadX 6.0.1 to 6.5.1.202602a

Timeline

  • 2026-10-02: disclosed
  • 2026-10-20: advisory

References

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