HIGHCVE-2026-35227Published Modified CNA CERTVDE
CVE-2026-35227: Improper resource management in CODESYS Modbus TCP Server
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.
Metrics
- CVSS v4.0
- 8.2
- Severity
- HIGH
- Fixed in
- 4.6.0.0
- Affected Products
- 1
Fix available
4.6.0.0
Affected packages
- CODESYS / CODESYS Modbus< 4.6.0.0 (from 1.0.0.0)
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NReferences