High 7.5Published Mar 24, 2026

CVE-2026-3509CODESYS Control Audit Log Format String DoS

Updated under an hour ago (Oct 28, 2026, 1:10 AM ET)

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It affects CODESYS Control RTE (SL) and 14 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for CODESYS Control RTE (SL)

Exploited in the last 30 days

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: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-134
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: CERTVDE
NVD analysis: Awaiting Analysis
Record last updated: Mar 26, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

CODESYS CODESYS Control RTE (SL) codesys:control_rte_sl (from the name)	from 3.5.17.0 before 3.5.22.0	CNA record
CODESYS CODESYS Control RTE (for Beckhoff CX) SL codesys:control_rte_for_beckhoff_cx_sl (from the name)	from 3.5.17.0 before 3.5.22.0	CNA record
CODESYS CODESYS Control Win (SL) codesys:control_win_sl (from the name)	from 3.5.17.0 before 3.5.22.0	CNA record
CODESYS CODESYS Runtime Toolkit codesys:runtime_toolkit (from the name)	from 3.5.17.0 before 3.5.22.0	CNA record
CODESYS CODESYS Control for BeagleBone SL codesys:control_for_beaglebone_sl (from the name)	from 4.1.0.0 before 4.21.0.0	CNA record
CODESYS CODESYS Control for emPC-A/iMX6 SL codesys:control_for_empc_a_imx6_sl (from the name)	from 4.1.0.0 before 4.21.0.0	CNA record
CODESYS CODESYS Control for IOT2000 SL codesys:control_for_iot2000_sl (from the name)	from 4.1.0.0 before 4.21.0.0	CNA record
CODESYS CODESYS Control for Linux ARM SL codesys:control_for_linux_arm_sl (from the name)	from 4.1.0.0 before 4.21.0.0	CNA record
CODESYS CODESYS Control for Linux SL codesys:control_for_linux_sl (from the name)	from 4.1.0.0 before 4.21.0.0	CNA record
CODESYS CODESYS Control for PFC100 SL codesys:control_for_pfc100_sl (from the name)	from 4.1.0.0 before 4.21.0.0	CNA record
1–10 of 15

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.