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Vulnerability record · CVE-2026-35225 · published 23 April 2026

CVE-2026-35225: An unauthenticated remote attacker is able to exhaust all available TCP connections in the CODESYS EtherNet/IP…

An unauthenticated remote attacker is able to exhaust all available TCP connections in the CODESYS EtherNet/IP adapter stack, preventing legitimate clients from establishing new connections.

8.7 CVSS 4.0 High EPSS 0.57% · top 55.2% CWE-754 · CWE-754 Awaiting Analysis
8.7CVSS 4.0 base score
0.57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

An unauthenticated remote attacker is able to exhaust all available TCP connections in the CODESYS EtherNet/IP adapter stack, preventing legitimate clients from establishing new connections.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://codesys.csaf-tp.certvde.com/.well-known/csaf/white/2026/advisory2026-04_vde-2026-040.json
https://www.certvde.com/en/advisories/VDE-2026-040/

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Source: NIST National Vulnerability Database (record CVE-2026-35225), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.