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OpenAdvisories
High · 7.8 CVE-2026-44469 EUVD-2026-31797GHSA-fhx5-27vm-6mqj

Incorrect Default Permissions in CODESYS Development System

Published May 26, 2026 · Updated May 26, 2026 · Assigned by CERTVDE

Description

The affected product extracts installation files to a temporary directory with incorrect default permissions during administrative installation. A low-privileged local attacker can exploit a TOCTOU race condition with a practical time window to replace verified files with malicious ones before installation, resulting in local privilege escalation.

Affected products

VendorProductAffectedFixed
CODESYS CODESYS Development System 3.0.0.0 – < 3.5.22.20 3.5.22.20

Advisories 2

References