CVE-2025-41739 — MEDIUM (5.9)

Vulnerability 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.

CVSS Score

5.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-125

References

https://certvde.com/de/advisories/VDE-2025-099

FAQ

What is CVE-2025-41739?

CVE-2025-41739 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 ...

How severe is CVE-2025-41739?

CVE-2025-41739 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-41739?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.