Eclipse ThreadX up to 6.5.1.202602a Cortex-A7 MMU buffer overflow

Summaryinfo

A vulnerability was found in Eclipse ThreadX up to 6.5.1.202602a and classified as very critical. The impacted element is an unknown function of the component Cortex-A7 MMU. Executing a manipulation can lead to buffer overflow. This vulnerability is tracked as CVE-2026-95109. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as very critical was found in Eclipse ThreadX up to 6.5.1.202602a. This vulnerability affects an unknown code of the component Cortex-A7 MMU. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability was named CVE-2026-95109 since 09/23/2026. The exploitation appears to be easy. The attack can be initiated remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/20/2026).

Upgrading to version 6.5.2.202603 eliminates this vulnerability.

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Productinfo

Vendor

• Eclipse

Name

• ThreadX

Version

• 6.5.1.202602a

License

• open-source

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