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CVE-2025-52991

3.2 · LOW

The Nix, Lix, and Guix package managers default to using temporary build directories in a world-readable and world-writable location.

Published Jun 27, 2025CWE-276EPSS 0.17%

Overview

CVE-2025-52991 is a low-severity vulnerability. It was published on June 27, 2025 and has a CVSS 3.1 base score of 3.2 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.2, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The Nix, Lix, and Guix package managers default to using temporary build directories in a world-readable and world-writable location. This allows standard users to deceive the package manager into using directories with pre-existing content, potentially leading to unauthorized actions or data manipulation. 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refdiscourse.nixos.org/t/security-advisory-privilege-escalations-in-nix-lix-and-guix/66017Refguix.gnu.org/en/blog/2025/privilege-escalation-vulnerabilities-2025/Reflabs.snyk.ioReflix.systems/blog/2025-06-24-lix-cves/Refsecurity-tracker.debian.org/tracker/CVE-2025-52991Refsecurity.snyk.io/vuln/?search=CVE-2025-52991

How CyberStrike helps

Frequently asked questions

What is CVE-2025-52991?

CVE-2025-52991 is a low-severity vulnerability. It was published on June 27, 2025 and has a CVSS 3.1 base score of 3.2 (LOW).

How severe is CVE-2025-52991?

This vulnerability has a CVSS 3.1 base score of 3.2, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-52991?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-52991?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-52991 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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