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 t...

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.

Metrics

CVSS 3.1

7/10

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

7.3/10

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.16%

5.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

References

Timeline

Published: Oct 19, 2025
Last Modified: Jun 17, 2026
Status: Deferred

Frequently Asked Questions

What is 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.

How severe is CVE-2025-11940?

CVE-2025-11940 has a CVSS score of 7.3/10 (HIGH severity). The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.

How do I fix CVE-2025-11940?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.