CVE-2026-35227
Improper resource management in CODESYS Modbus TCP Server
- State
- Published
- Severity
- 8.2 High
- Published
- May 12, 2026
- Updated
- May 13, 2026
- Reserved
- Apr 1, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.2 High | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | CERTVDE |
Weaknesses
- CWE-772 Missing Release of Resource after Effective Lifetime
Affected Products
| Product | Versions |
|---|---|
CODESYS ModbusCODESYS |
|
References
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