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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.

PUBLISHED Reserved 2026-03-04 | Published 2026-03-24 | Updated 2026-03-26 | Assigner CERTVDE




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-134 Use of Externally-Controlled Format String

Product status

Default status
unaffected

3.5.17.0 (semver) before 3.5.22.0
affected

Default status
unaffected

3.5.17.0 (semver) before 3.5.22.0
affected

Default status
unaffected

3.5.17.0 (semver) before 3.5.22.0
affected

Default status
unaffected

3.5.17.0 (semver) before 3.5.22.0
affected

Default status
unaffected

4.1.0.0 (semver) before 4.21.0.0
affected

Default status
unaffected

4.1.0.0 (semver) before 4.21.0.0
affected

Default status
unaffected

4.1.0.0 (semver) before 4.21.0.0
affected

Default status
unaffected

4.1.0.0 (semver) before 4.21.0.0
affected

Default status
unaffected

4.1.0.0 (semver) before 4.21.0.0
affected

Default status
unaffected

4.1.0.0 (semver) before 4.21.0.0
affected

Default status
unaffected

4.1.0.0 (semver) before 4.21.0.0
affected

Default status
unaffected

4.1.0.0 (semver) before 4.21.0.0
affected

Default status
unaffected

4.1.0.0 (semver) before 4.21.0.0
affected

Default status
unaffected

4.1.0.0 (semver) before 4.21.0.0
affected

Default status
unaffected

4.1.0.0 (semver) before 4.21.0.0
affected

References

certvde.com/de/advisories/VDE-2026-018

cve.org (CVE-2026-3509)

nvd.nist.gov (CVE-2026-3509)

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