CVE-2026-35227

Published: May 12, 2026

Modified: May 13, 2026

PUBLISHED

Description

An unauthenticated remote attacker may exhaust all available TCP connections in the CODESYS Modbus TCP Server stack if a race condition in connection handling is successfully exploited, preventing legitimate clients from establishing new connections.

Vendor	Product	Versions
CODESYS	CODESYS Modbus	affected `1.0.0.0 - < 4.6.0.0`

Weaknesses (CWE)

CWE-772

References

https://certvde.com/de/advisories/VDE-2026-042

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Start Training

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.

Scan Now

CVE-2026-35227

Description

Affected Products

Weaknesses (CWE)

References