CVE-2025-11940Public exploit

Local code execution via unqualified schtasks lookup

Published Oct 19, 2025 · Updated Oct 19, 2025

Uncontrolled search path in LibreWolf Installer 143.0.4-1 allows local users to execute code through a planted schtasks.exe file. The assets/setup.nsi script invokes schtasks.exe without an absolute path, so Windows resolves an attacker-controlled copy beside the installer. Exploitation requires local access to place that file and execution of the installer; the payload runs with the installing user’s privileges.

CVSS severity7.3
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled search path in LibreWolf Installer 143.0.4-1 allows local users to execute code through a planted schtasks.exe file. The assets/setup.nsi script invokes schtasks.exe without an absolute path, so Windows resolves an attacker-controlled copy beside the installer. Exploitation requires local access to place that file and execution of the installer; the payload runs with the installing user’s privileges.

The record

CVE
CVE-2025-11940
Published
Oct 19, 2025
Updated
Oct 19, 2025
Vendor
LibreWolf Community
Product
LibreWolf
Classifications
CWE-427, CWE-426, T1574.008
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 19, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=143.0.4-1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

LibreWolf Community · LibreWolfversion=143.0.4-1

Published CVSS scores

7.3VulDBCVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
6.0VulDBAV:L/AC:H/Au:S/C:C/I:C/A:C
7.0VulDBCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-427Uncontrolled Search Path Element
CWE-426Untrusted Search Path
T1574.008Path Interception by Search Order Hijacking

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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