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

High 8.5 Published 26 May 2026 Updated 26 May 2026

A local attacker can exploit a race condition during installation to replace files, leading to privilege escalation in CODESYS Development System.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-44469?

CVE-2026-44469 is a high-severity vulnerability in CODESYS Development System, published on 26 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-276

Which versions are affected by CVE-2026-44469?

It affects 1 product.

Products include Codesys Development System.

How do I fix CVE-2026-44469?

No fix has been published for CVE-2026-44469 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-44469 being exploited?

There is no known exploitation of CVE-2026-44469 in the wild and no public exploit code.

Sources

Also known as GHSA-fhx5-27vm-6mqj.