CVE-2026-2364 CODESYS Installer TOCTOU Privilege Escalation
A local attacker can exploit a TOCTOU race condition in the CODESYS Installer to gain elevated privileges during updates or installations.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-2364?
CVE-2026-2364 is a high-severity vulnerability in CODESYS Installer, published on 10 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
If a legitimate user confirms a self-update prompt or initiate an installation of a CODESYS Development System, a low privileged local attacker can gain elevated rights due to a TOCTOU vulnerability in the CODESYS installer.
Weakness: CWE-367
Which versions are affected by CVE-2026-2364?
How do I fix CVE-2026-2364?
No fix has been published for CVE-2026-2364 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-2364 being exploited?
There is no known exploitation of CVE-2026-2364 in the wild and no public exploit code.
Sources
Also known as GHSA-wjf9-5g6m-rgcr.