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CVE-2026-3509

HIGH CVSS 3.1: 7.5 EPSS 0.08%
Updated Mar 24, 2026
An
Parameter Value
CVSS 7.5 (HIGH)
Type CWE-134 (Use of Externally-Controlled Format String)
Vendor An
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1