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Vulnerability record · CVE-2026-3509 · published 24 March 2026

CVE-2026-3509: An unauthenticated remote attacker may be able to control the format string of messages processed by the Audit…

An unauthenticated remote attacker may be able to control the format string of messages processed by the Audit Log of the CODESYS Control runtime system, potentially resulting in a denial‑of‑service (DoS) condition.

7.5 CVSS 3.1 High EPSS 0.57% · top 54.9% CWE-134 · CWE-134 Awaiting Analysis
7.5CVSS 3.1 base score
0.57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

An unauthenticated remote attacker may be able to control the format string of messages processed by the Audit Log of the CODESYS Control runtime system, potentially resulting in a denial‑of‑service (DoS) condition.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

LinkTags
https://certvde.com/de/advisories/VDE-2026-018

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-3509), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.