CVE-2026-35227 | THREATINT

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.

PUBLISHED Reserved 2026-04-01 | Published 2026-05-12 | Updated 2026-05-12 | Assigner CERTVDE

HIGH: 8.2CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-772 Missing Release of Resource after Effective Lifetime

Product status

Default status
unaffected

1.0.0.0 (semver) before 4.6.0.0
affected

Credits

ABB Schweiz AG finder

References

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

cve.org (CVE-2026-35227)

nvd.nist.gov (CVE-2026-35227)

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