CVE-2025-46416
The Nix, Lix, and Guix package managers allow a bypass of build isolation in which a user can elevate their privileges to the build user account (e.g., nixbld or guixbuild). This affects Nix through
02 Description
The Nix, Lix, and Guix package managers allow a bypass of build isolation in which a user can elevate their privileges to the build user account (e.g., nixbld or guixbuild). This affects Nix through
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.18% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 8.0% of scored records. A rank, not a probability.
- NVD base score
- 2.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
- NVD analysis status
- Deferred. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2025-06-27 00:00Z1 YR AGO
- Last updated
- 2025-06-27 15:49Z1 YR AGO
- Reserved
- 2025-04-24
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Low (CVSS 2.9)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weaknesses
- CWE-282Improper Ownership ManagementClass
- Data version
- 5.1
- Document digest
- ee49b5d16d6ad05cd8f569c04b828a80d34e6971ae10671cda301afddce0aacf
05 Affected products
06 References
- discourse.nixos.orghttps://discourse.nixos.org/t/security-advisory-privilege-escalations-in-nix-lix-and-guix/66017
- lix.systemshttps://lix.systems/blog/2025-06-24-lix-cves/
- guix.gnu.orghttps://guix.gnu.org/en/blog/2025/privilege-escalation-vulnerabilities-2025/
- labs.snyk.iohttps://labs.snyk.io
- security.snyk.iohttps://security.snyk.io/vuln/?search=CVE-2025-46416
- security-tracker.debian.orghttps://security-tracker.debian.org/tracker/CVE-2025-46416
07 Fixed in
Debian 11
- guix No fix yet
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 22.04 LTS
- guix No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 24.04 LTS
- guix No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.