Vulnerability in Librewolf
CVE-2025-11940
A security vulnerability has been detected in LibreWolf up to 143.0.4-1 on Windows. This affects an unknown function of the file assets/setup.nsi of the component Installer. Such manipulation leads to uncontrolled search path. The attack must be carried out locally. Attacks of this nature are highly complex. The exploitability is reported as difficult. Upgrading to version 144.0-1 mitigates this issue. The name of the patch is dd10e31dd873e9cb309fad8aed921d45bf905a55. It is suggested to upgrade the affected component.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (6.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Librewolf — versions 143.0.4-1, 144.0-1
Weakness classification (CWE)
References
- vuldb.com/ (vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- github.com/Cyber-Wo0dy/report/blob/main/librewolf/143.0.4-1/librewolf_installer… (related)
- codeberg.org/librewolf/bsys6/commit/dd10e31dd873e9cb309fad8aed921d45bf905a55 (patch)
- codeberg.org/librewolf/bsys6/releases/tag/144.0-1 (patch)
Frequently asked questions
- What is CVE-2025-11940?
- CVE-2025-11940 is a high-severity vulnerability in Librewolf, classified under Untrusted Search Path. CVSS score: 7.0/10. Published 2025-10-19.
- How severe is CVE-2025-11940?
- High severity. CVSS v3 base score is 7.0 out of 10.