TOCTOU Vulnerability in CODESYS Development System by CODESYS Group
CVE-2026-2364

7.3HIGH

Key Information:

Vendor

Codesys

Status
Codesys Installer
Vendor
CVE Published:
10 March 2026

What is CVE-2026-2364?

A TOCTOU vulnerability exists in the CODESYS Development System installer, allowing a low privileged local attacker to exploit the timing of events. If a legitimate user confirms a self-update prompt or initiates an installation, the attacker can gain elevated rights, leading to potential unauthorized access and manipulation of system settings.

Affected Version(s)

CODESYS Installer 0.0.0 < 2.6.1.0

References

https://certvde.com/de/advisories/VDE-2026-012

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

David Ruscheweyh from SEW-EURODRIVE GmbH & Co KG
.