CVE-2026-35227CWE-772

Improper resource management in CODESYS Modbus TCP Server

High · published May 12, 2026

CVSS v4.0
8.2
EPSS
1%
Percentile
44.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.2 · HIGH
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:N
EPSS
0.00544 · 44.9th percentile
Weakness
CWE-772 · Missing Release of Resource after Effective Lifetime
Published
2026-05-12T07:14Z
EPSS history
Timeline
  • 12 MAY 07:14Z
    Improper resource management in CODESYS Modbus TCP Server
    cvelistv5