Remote Access Vulnerability in CODESYS Control Runtime System by 3S Software
CVE-2025-41659

8.3HIGH

Key Information:

Vendor

Codesys

Status
Control Rte (sl)
Control Rte (for Beckhoff Cx) Sl
Control Win (sl)
Hmi (sl)
Vendor
CVE Published:
4 August 2025

What is CVE-2025-41659?

A vulnerability exists in the CODESYS Control runtime system that permits low-privileged attackers to remotely access the PKI folder. This exposure allows unauthorized reading and writing of sensitive certificates and keys. As a result, attackers can extract critical data or mislead the system into accepting untrustworthy certificates as valid. While the services continue to function, the integrity of information is compromised, particularly if certificates are deleted, leading to unencrypted communications.

Affected Version(s)

Control for BeagleBone SL 0.0.0.0 < 4.17.0.0

Control for emPC-A/iMX6 SL 0.0.0.0 < 4.17.0.0

Control for IOT2000 SL 0.0.0.0 < 4.17.0.0

References

https://certvde.com/de/advisories/VDE-2025-051

CVSS V3.1

Score:
8.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Luca Borzacchiello from Nozomi Networks
.