CVE-2026-3509 PUBLISHED

CODESYS Control Audit Log Format String DoS

Assigner: CERTVDE
Reserved: 04.03.2026 Published: 24.03.2026 Updated: 24.03.2026

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.

Metrics

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

Product Status

Vendor CODESYS
Product CODESYS Control RTE (SL)
Versions Default: unaffected
  • affected from 3.5.17.0 to 3.5.22.0 (excl.)
Vendor CODESYS
Product CODESYS Control RTE (for Beckhoff CX) SL
Versions Default: unaffected
  • affected from 3.5.17.0 to 3.5.22.0 (excl.)
Vendor CODESYS
Product CODESYS Control Win (SL)
Versions Default: unaffected
  • affected from 3.5.17.0 to 3.5.22.0 (excl.)
Vendor CODESYS
Product CODESYS Runtime Toolkit
Versions Default: unaffected
  • affected from 3.5.17.0 to 3.5.22.0 (excl.)
Vendor CODESYS
Product CODESYS Control for BeagleBone SL
Versions Default: unaffected
  • affected from 4.1.0.0 to 4.21.0.0 (excl.)
Vendor CODESYS
Product CODESYS Control for emPC-A/iMX6 SL
Versions Default: unaffected
  • affected from 4.1.0.0 to 4.21.0.0 (excl.)
Vendor CODESYS
Product CODESYS Control for IOT2000 SL
Versions Default: unaffected
  • affected from 4.1.0.0 to 4.21.0.0 (excl.)
Vendor CODESYS
Product CODESYS Control for Linux ARM SL
Versions Default: unaffected
  • affected from 4.1.0.0 to 4.21.0.0 (excl.)
Vendor CODESYS
Product CODESYS Control for Linux SL
Versions Default: unaffected
  • affected from 4.1.0.0 to 4.21.0.0 (excl.)
Vendor CODESYS
Product CODESYS Control for PFC100 SL
Versions Default: unaffected
  • affected from 4.1.0.0 to 4.21.0.0 (excl.)
Vendor CODESYS
Product CODESYS Control for PFC200 SL
Versions Default: unaffected
  • affected from 4.1.0.0 to 4.21.0.0 (excl.)
Vendor CODESYS
Product CODESYS Control for PLCnext SL
Versions Default: unaffected
  • affected from 4.1.0.0 to 4.21.0.0 (excl.)
Vendor CODESYS
Product CODESYS Control for Raspberry Pi SL
Versions Default: unaffected
  • affected from 4.1.0.0 to 4.21.0.0 (excl.)
Vendor CODESYS
Product CODESYS Control for WAGO Touch Panels 600 SL
Versions Default: unaffected
  • affected from 4.1.0.0 to 4.21.0.0 (excl.)
Vendor CODESYS
Product CODESYS Virtual Control SL
Versions Default: unaffected
  • affected from 4.1.0.0 to 4.21.0.0 (excl.)

References

Problem Types

  • CWE-134 Use of Externally-Controlled Format String CWE