CVE-2025-9557 Bluetooth: Mesh: Out-of-Bound Write in gen_prov_cont
An out-of-bound write in the Bluetooth Mesh provisioning allows attackers to execute arbitrary code or cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-9557?
CVE-2025-9557 is a high-severity memory corruption vulnerability in zephyrproject-rtos Zephyr, published on 26 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An out-of-bound write can lead to an arbitrary code execution. Even on devices with some form of memory protection, this can still lead to a crash and a resultant denial of service.
Weakness: CWE-120
Which versions are affected by CVE-2025-9557?
How do I fix CVE-2025-9557?
No fix has been published for CVE-2025-9557 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-9557 being exploited?
There is no known exploitation of CVE-2025-9557 in the wild and no public exploit code.
Sources
Also known as GHSA-r3j3-c5v7-2ppf.