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CVE-2025-11940

25
FAUCET Score

CVE-2025-11940 is a high-severity vulnerability (CVSS 7.0) affecting LibreWolf up to version 143.0.4-1 on Windows, specifically within the installer's setup.nsi component, leading to an uncontrolled search path. This local attack is highly complex and difficult to exploit, but successful exploitation could result in high impact to confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog. Upgrading to LibreWolf version 144.0-1 or later mitigates this issue.

Impacted Technologies

VendorProductVersion(s)CPE
N/ALibreWolf
143.0.4-1CNA affected

CVSS Data

CVSS version used by this source: 4.0

7.3HIGH

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.16%
Probability of exploitation in next 30 days
EPSS Percentile
5.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0016 is in the 25th percentile among its peer group of 1,525 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.4 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

codeberg.org / librewolf/bsys6/commit/dd10e31dd873e9cb309fad8aed921d45bf905a55
codeberg.org / librewolf/bsys6/releases/tag/144.0-1
github.com / Cyber-Wo0dy/report/blob/main/librewolf/143.0.4-1/librewolf_installer_exe_hijacking.md
vuldb.com
vuldb.com
vuldb.com