CVE-2026-78319 TOCTOU Vulnerability in file exchange
An unauthenticated remote attacker can exploit a TOCTOU race condition to bypass security controls and execute unauthorized code on Sauter building automation devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-78319?
CVE-2026-78319 is a critical vulnerability in Sauter ecos504, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A service running on the affected products contains a potential Time-of-Check Time-of-Use (TOCTOU) race condition. An unauthenticated remote attacker could exploit this race condition to bypass intended security controls. This may result in the execution of unauthorized code.
Weakness: CWE-367
Which versions are affected by CVE-2026-78319?
How do I fix CVE-2026-78319?
No fix has been published for CVE-2026-78319 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-78319 being exploited?
There is no known exploitation of CVE-2026-78319 in the wild and no public exploit code.
Sources
Also known as GHSA-jc56-mhh5-666m.