CVE-2025-52993

EUVD-2025-19378
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.
Race Condition
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
mitreCNA
5.6 MEDIUM
LOCAL
HIGH
NONE
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
nixosnix
𝑥
< 2.24.15
CNA
nixosnix
2.25.0 ≤
𝑥
< 2.26.4
CNA
nixosnix
2.27.0 ≤
𝑥
< 2.28.4
CNA
nixosnix
2.29.0 ≤
𝑥
< 2.29.1
CNA
Debian logo
Debian Releases
Debian Product
Codename
guix
bullseye
vulnerable
bullseye (security)
vulnerable
sid
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
guix
jammy
needs-triage
noble
needs-triage
oracular
ignored
plucky
ignored
questing
dne
Common Weakness Enumeration
References
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-2025-52993
https://security.snyk.io/vuln/?search=CVE-2025-52993