CVE-2025-41659 HIGH

CVE-2025-41659: CODESYS Control PKI Exposure Enables Remote Certificate Access

Vendor Codesys
Product Control RTE (SL)
Weakness CWE-732
Published August 4, 2025
Last update August 4, 2025

CVSS base score

8.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 4, 2025 CVE published
August 4, 2025 Record updated