CVE-2025-52991

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.

Published: 2025-06-27 Last update: 2026-04-15 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-52991 is rated Low Risk (21.3/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.08%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-52991

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-23 0.01% 0.08% +0.07%
2 2025-06-28 — 0.01% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-52991

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.2 3.1 LOW
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 1.4 1.4 [email protected]

Weakness enumeration for CVE-2025-52991

OS Trackers for CVE-2025-52991

vendor priority summary link
alpine low CVE-2025-52991: 1 source package rows (nix); 13 state rows across 2 repos (3.22-community, edge-community); fixed 0, open 13. https://security.alpinelinux.org/vuln/CVE-2025-52991
debian end-of-life CVE-2025-52991 end-of-life priority: Debian including 1 source packages (guix), 2 status rows across 2 suites (bullseye, sid): open 2. https://security-tracker.debian.org/tracker/CVE-2025-52991
ubuntu medium CVE-2025-52991 medium priority: Ubuntu including 1 source packages (guix), 6 status rows across 6 suites (jammy, noble, oracular, plucky, questing, upstream): needs-triage 3, ignored 2, DNE 1. https://ubuntu.com/security/CVE-2025-52991

Affected software / configurations for CVE-2025-52991

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2025-52991

cvelogic Threat Intelligence