CVE-2025-41739 - CVE House
Back to Database
Status published Medium CVE-2025-41739

CODESYS Control - Linux/QNX SysSocket flaw

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-41739

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • ABB AG

Affected Vendor

Affected Software

CODESYS PLCHandler, CODESYS Remote Target Visu, CODESYS Runtime Toolkit, CODESYS Control for BeagleBone SL, CODESYS Control for emPC-A/iMX6 SL, CODESYS Control for IOT2000 SL, CODESYS Control for Linux ARM SL, CODESYS Control for Linux SL, CODESYS Control for PFC100 SL, CODESYS Control for PFC200 SL, CODESYS Control for PLCnext SL, CODESYS Control for Raspberry Pi SL, CODESYS Control for WAGO Touch Panels 600 SL, CODESYS Edge Gateway for Linux, CODESYS TargetVisu for Linux SL, CODESYS Virtual Control SL
Vulnerable Versions:
3.5.21.0, 4.15.0.0

Timeline

Official Publish: December 1st, 2025
Last Modified: January 7th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)