5.6

CVE-2025-52993: nixos nix Race Condition

CVSS: 5.6v3.1MediumDeferred
AliasesUBUNTU-CVE-2025-52993DEBIAN-CVE-2025-52993
Published 27-06-2025Last modified 27-06-2025
Open JSON

Vulnerability summary

CVE-2025-52993 is a medium (CVSS 5.6) Race Condition vulnerability in nixos nix. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 2.7% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.6/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.14%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2025:15248-1

Timeline

  1. 27-06-2025
    PublishedVulnerability first disclosed.
  2. 27-06-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

+0.01 pp

From 0.13% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.14%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • guixAll versions (No fix recorded)
Nixos1 product
  • nix< 2.24.15 | ≥ 2.25.0, < 2.26.4 | ≥ 2.27.0, < 2.28.4 | ≥ 2.29.0, < 2.29.1
Ubuntu1 product
  • guixAll versions (No fix recorded)

3 vendors · 3 products

References

15 links
Show all 15 references