7.9

CVE-2025-53819: nixos nix Privilege Dropping / Lowering Errors

CVSS: 7.9v3.1HighDeferred
Published 14-07-2025Last modified 15-07-2025
Open JSON

Vulnerability summary

CVE-2025-53819 is a high (CVSS 7.9) Privilege Dropping / Lowering Errors vulnerability in nixos nix. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 3.5% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.9/10
010
High · v3.1 (CVE.org)
EPSS score
0.15%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-07-2025
    PublishedVulnerability first disclosed.
  2. 15-07-2025
    Last modifiedVulnerability information updated.

Description

Nix is a package manager for Linux and other Unix systems. Builds with Nix 2.30.0 on macOS were executed with elevated privileges (root), instead of the build users. The fix was applied to Nix 2.30.1. No known workarounds are available.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.15%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

+0.02 pp

From 0.13% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.15%

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

Nixos1 product

1 vendor · 1 product

References

4 links