BaseFortify

Publication date: 2025-12-09

Last updated on: 2026-04-13

Assigner: Mozilla Corporation

Description

Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2025-12-09

Last Modified

2026-04-13

Generated

2026-07-06

AI Q&A

2025-12-09

EPSS Evaluated

2026-07-05

NVD

CVE-2025-14329

Affected Vendors & Products

Vendor	Product	Version / Range
mozilla	firefox	*
mozilla	firefox_esr	*
mozilla	thunderbird	to 140.6.0 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is a privilege escalation issue in the Netmonitor component of Firefox versions prior to 146 and Firefox ESR versions prior to 140.6. It allows an attacker to gain higher privileges than intended within the affected software.

Impact Analysis

The vulnerability can lead to an attacker gaining elevated privileges, which may result in full control over the affected Firefox browser, potentially allowing them to access, modify, or delete sensitive information, and disrupt system integrity and availability.

Mitigation Strategies

Update Firefox to version 146 or later, or Firefox ESR to version 140.6 or later to address the privilege escalation vulnerability in the Netmonitor component.

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