CVE-2025-52993 json
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 bui…
published 2025-06-27 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-19378
- cvss
- 5.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 3%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- NixOS Nix 2.24.15, 2.26.4, 2.28.4, 2.29.1
- nix openSUSE Tumbleweed 2.29.1-1.1
opensuse advisories openSUSE-SU-2025:15248-1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 16 mo ago
Exploit prediction
0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.6 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L |
Affected products
- NixOS Nix
Classification
- Weakness
-
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
References
- discourse.nixos.org /t/security-advisory-privilege-escalations-in-nix-lix-and-guix/66017
- lix.systems /blog/2025-06-24-lix-cves/
- guix.gnu.org /en/blog/2025/privilege-escalation-vulnerabilities-2025/
- labs.snyk.io
- security.snyk.io /vuln/?search=CVE-2025-52993
- security-tracker.debian.org /tracker/CVE-2025-52993
Sources
- CVE List CVE-2025-52993
- NVD CVE-2025-52993
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.