CVE-2025-41659 CODESYS Control PKI Exposure Enables Remote Certificate Access
A low-privileged attacker can remotely read and write PKI certificates and keys in CODESYS Control, enabling data extraction or trust manipulation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-41659?
CVE-2025-41659 is a high-severity vulnerability in CODESYS Control RTE (SL), published on 4 Aug 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A low-privileged attacker can remotely access the PKI folder of the CODESYS Control runtime system and thus read and write certificates and its keys. This allows sensitive data to be extracted or to accept certificates as trusted. Although all services remain available, only unencrypted communication is possible if the certificates are deleted.
Weakness: CWE-732
Which versions are affected by CVE-2025-41659?
How do I fix CVE-2025-41659?
No fix has been published for CVE-2025-41659 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-41659 being exploited?
There is no known exploitation of CVE-2025-41659 in the wild and no public exploit code.
Sources
Also known as GHSA-x97q-fjxx-pvxm.