CVE-2026-44469 HIGH

CVE-2026-44469: Incorrect Default Permissions in CODESYS Development System

Vendor Codesys
Product CODESYS Development System
Weakness CWE-276
Published May 26, 2026
Last update May 26, 2026

CVSS base score

8.5/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 26, 2026 CVE published
May 26, 2026 Record updated