CVE-2025-26503 Buffer manipulation
A crafted system call argument causes memory corruption in VxWorks, potentially allowing code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-26503?
CVE-2025-26503 is a medium-severity memory corruption vulnerability in Wind River Systems Inc VxWorks 7, published on 18 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A crafted system call argument can cause memory corruption.
Weakness: CWE-119
Which versions are affected by CVE-2025-26503?
How do I fix CVE-2025-26503?
No fix has been published for CVE-2025-26503 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-2025-26503 being exploited?
There is no known exploitation of CVE-2025-26503 in the wild and no public exploit code.
Sources
Also known as GHSA-fgv6-q36r-w652.