CVE-2026-94202: Eclipse ThreadX Module Manager block-pool dispatcher insufficient parameter validation

CVE-2026-94202 · Severity: info · Published 2026-10-20

Eclipse ThreadX is a real-time operating system kernel used in embedded and IoT systems. The Module Manager's block-pool creation function fails to validate all parameter words it reads, allowing a memory-protected module to trigger out-of-bounds reads in privileged kernel context. This could leak sensitive memory contents or cause a denial of service by crashing the requesting thread.

Technologies: Eclipse ThreadX. Vendors: Eclipse.

Quick answers

Is CVE-2026-94202 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-94202 being exploited in the wild.
How severe is CVE-2026-94202?
Informational severity, published 20 October 2026.
Which products and versions are affected?
Eclipse ThreadX 6.0.1 through 6.5.1.202602a.
Is there a fix for CVE-2026-94202?
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-2026-94202 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-94202?
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 `_txm_module_manager_tx_block_pool_create_dispatch` function validates only 2 of 4 ALIGN_TYPE words in an extra-parameter array before reading all 4 words, resulting in two-word out-of-bounds reads. The vulnerability exists in the validation layer itself (indices 1–2 used for bounds-checking a caller buffer, but index 2 itself is unvalidated) and when building the kernel service call (index 3 also unvalidated). A malicious or compromised low-privilege module can exploit this by passing a pointer to an array with controlled layout to read kernel memory immediately past an approved region.

Affected products

  • Eclipse ThreadX 6.0.1 through 6.5.1.202602a

Timeline

  • 2026-10-20: advisory

References

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