Vulnerability · Published Oct 19, 2025 · Assigned by VulDB

CVE-2025-11940LibreWolf Installer setup.nsi uncontrolled search path

High 7.0

In plain English

A high-severity uncontrolled search path in LibreWolf. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).

Severity (CVSS 3.1)7.0High

Exploit odds (30 days)0.2%top 84.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
n/a	LibreWolf	143.0.4-1

Weakness: CWE-427, CWE-426 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:O/RC:C

References

VDB-329019 | LibreWolf Installer setup.nsi uncontrolled search path vdb-entry
VDB-329019 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #671575 | LibreWolf Librewolf installer 143.0.4-1 EXE Hijacking third-party-advisory
https://github.com/Cyber-Wo0dy/report/blob/main/librewolf/143.0.4-1/librewolf_installer_exe_hijacking.md related
https://codeberg.org/librewolf/bsys6/commit/dd10e31dd873e9cb309fad8aed921d45bf905a55 patch
https://codeberg.org/librewolf/bsys6/releases/tag/144.0-1 patch