CVE-2026-102709 Information disclosure in ThreadX
Attackers in the non-secure world can read secure memory via improper pointer validation in ThreadX TrustZone-M functions, potentially exposing cryptographic keys.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-102709?
CVE-2026-102709 is a high-severity vulnerability in Eclipse Foundation ThreadX, published on 29 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper validation of non-secure (NS) pointers in multiple TrustZone-M non-secure callable (NSC) entry functions allows an attacker executing in the non-secure world to supply pointers to secure memory. The secure firmware subsequently dereferences these attacker-controlled pointers without verifying that they reference non-secure memory, resulting in unintended disclosure of secure memory contents. This violates the isolation guarantees provided by Arm TrustZone-M and can be leveraged as a memory disclosure or corruption primitive that may enable recovery of sensitive cryptographic material.
Which versions are affected by CVE-2026-102709?
How do I fix CVE-2026-102709?
No fix has been published for CVE-2026-102709 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-102709 being exploited?
There is no known exploitation of CVE-2026-102709 in the wild and no public exploit code.
Sources
Also known as GHSA-75rq-fmfg-xmgx, GHSA-ffg5-m7vh-vwrp.