CVE-2025-52993

Description

A race condition in the Nix, Lix, and Guix package managers enables changing the ownership of arbitrary files to the UID and GID of the build user (e.g., nixbld* or guixbuild*). 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.

Category

5.6
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Affected: NixOS Nix
Published at:
Updated at:

References

Link Tags
https://discourse.nixos.org/t/security-advisory-privilege-escalations-in-nix-lix-and-guix/66017
https://lix.systems/blog/2025-06-24-lix-cves/
https://guix.gnu.org/en/blog/2025/privilege-escalation-vulnerabilities-2025/
https://labs.snyk.io
https://security.snyk.io/vuln/?search=CVE-2025-52993
https://security-tracker.debian.org/tracker/CVE-2025-52993

Frequently Asked Questions

What is the severity of CVE-2025-52993?
CVE-2025-52993 has been scored as a medium severity vulnerability.
How to fix CVE-2025-52993?
To fix CVE-2025-52993, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-52993 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-52993 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-52993?
CVE-2025-52993 affects NixOS Nix.
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