CVE-2025-52992 Misconfiguration in Nix
Arbitrary processes can modify store content outside the sandbox due to improper permissions on failed builds, requiring an upgrade to Nix, Lix, or Guix.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-52992?
CVE-2025-52992 is a low-severity vulnerability in NixOS Nix, published on 27 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The Nix, Lix, and Guix package managers fail to properly set permissions when a derivation build fails. This may allow arbitrary processes to modify the content of a store outside of the build sandbox. This affects Nix before 2.24.15, 2.26.4, 2.28.4, and 2.29.1; Lix before 2.91.2, 2.92.2, and 2.93.1; and Guix before 1.4.0-38.0e79d5b.
Weakness: CWE-732
Which versions are affected by CVE-2025-52992?
How do I fix CVE-2025-52992?
Upgrade to a fixed version.
Is CVE-2025-52992 being exploited?
There is no known exploitation of CVE-2025-52992 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2025-52992, GHSA-wcw8-hffm-7w9g, UBUNTU-CVE-2025-52992.