CVE-2025-41739 CODESYS Control - Linux/QNX SysSocket flaw
An unauthenticated remote attacker can cause a denial of service in CODESYS Control runtime systems by exploiting a race condition leading to an out-of-bounds read.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-41739?
CVE-2025-41739 is a medium-severity vulnerability in CODESYS Control for BeagleBone SL, published on 1 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An unauthenticated remote attacker, who beats a race condition, can exploit a flaw in the communication servers of the CODESYS Control runtime system on Linux and QNX to trigger an out-of-bounds read via crafted socket communication, potentially causing a denial of service.
Weakness: CWE-125
Which versions are affected by CVE-2025-41739?
How do I fix CVE-2025-41739?
No fix has been published for CVE-2025-41739 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-41739 being exploited?
There is no known exploitation of CVE-2025-41739 in the wild and no public exploit code.
Sources
Also known as GHSA-5qp2-82v4-wwr8.