What is CVE-2025-46415?

CVE-2025-46415 is a low-severity vulnerability in Nixos Nix, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 3.2/10. Published 2025-06-27.

How severe is CVE-2025-46415?

Low severity. CVSS v3 base score is 3.2 out of 10.

Vulnerability in Nixos Nix

CVE-2025-46415

A race condition in the Nix, Lix, and Guix package managers allows the removal of content from arbitrary folders. 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…

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.001 (22.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.2 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L.

Affected products

Nixos Nix — versions 0, 2.25.0, 2.27.0

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

discourse.nixos.org/t/security-advisory-privilege-escalations-in-nix-lix-and-gu…
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/
security-tracker.debian.org/tracker/CVE-2025-46415

Frequently asked questions

What is CVE-2025-46415?: CVE-2025-46415 is a low-severity vulnerability in Nixos Nix, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 3.2/10. Published 2025-06-27.
How severe is CVE-2025-46415?: Low severity. CVSS v3 base score is 3.2 out of 10.