CVE-2026-95109 Cortex-A7 module data validation checks only the first address of a caller-supplied range
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-95109?
CVE-2026-95109 is a high-severity vulnerability in Eclipse ThreadX, published on 20 Oct 2026.
Official description
The Cortex-A7 MMU Modules port validates a caller-supplied buffer by translating **one address** — the first byte. The common Module Manager hands its range check the module instance, the start address and the complete byte size; the Cortex-A7 implementation discarded the instance and the size and asked the MMU a single question about the start.
A memory-protected module therefore passed any range whose first byte was user-readable, however far the rest of it reached. Privileged dispatch code then read or wrote the whole range. Because every protected-module dispatcher that consumes a buffer or an extra-parameter array goes through this one macro, the defect is not in any individual service: it is in the primitive all of them rely on.
Which versions are affected by CVE-2026-95109?
How do I fix CVE-2026-95109?
No fix has been published for CVE-2026-95109 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-95109 being exploited?
There is no known exploitation of CVE-2026-95109 in the wild and no public exploit code.
Sources
Also known as GHSA-fvp6-37q5-c648.