CVE-2025-41259 SWUpdate Untrusted Script Execution via Signed Update TOCTOU
Local attackers can exploit a race condition in SWUpdate to escalate privileges to root or install untrusted content via signed updates.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-41259?
CVE-2025-41259 is a high-severity vulnerability in sbabic SWUpdate, published on 3 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
SWUpdate before 2026.05 is affected by a time-of-check time-of-use (TOCTOU) race condition that allows local unprivileged attackers to escalate privileges to root or install untrusted contents using a signed update.
Weakness: CWE-367
Which versions are affected by CVE-2025-41259?
How do I fix CVE-2025-41259?
Upgrade to a fixed version.
Is CVE-2025-41259 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-41259 exists.
Sources
Also known as DEBIAN-CVE-2025-41259, GHSA-pmf3-4g49-qvxm, UBUNTU-CVE-2025-41259.