CVE-2025-52992

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.

• CWE-732

• https://discourse.nixos.org/t/security-advisory-privilege-escalations-in-nix-lix-and-guix/66017
• https://guix.gnu.org/en/blog/2025/privilege-escalation-vulnerabilities-2025/
• https://labs.snyk.io
• https://lix.systems/blog/2025-06-24-lix-cves/
• https://security-tracker.debian.org/tracker/CVE-2025-52992
• https://security.snyk.io/vuln/?search=CVE-2025-52992

Published

Jun 27, 2025

Last Modified

Jun 17, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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