Race Condition Vulnerability in Nix, Lix, and Guix Package Managers
CVE-2025-52993

5.6MEDIUM

Key Information:

Vendor

Nixos

Status
Nix
Vendor
CVE Published:
27 June 2025

What is CVE-2025-52993?

A race condition in the Nix, Lix, and Guix package managers allows unauthorized modification of file ownership. Attackers can exploit this vulnerability to change the ownership of arbitrary files to that of the build user, potentially elevating privileges and compromising system integrity.

Affected Version(s)

Nix 0 < 2.24.15

Nix 2.25.0 < 2.26.4

Nix 2.27.0 < 2.28.4

References

https://discourse.nixos.org/t/security-advisory-privilege...
https://lix.systems/blog/2025-06-24-lix-cves/
https://guix.gnu.org/en/blog/2025/privilege-escalation-vu...

CVSS V3.1

Score:
5.6
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.