---
id: CVE-2025-10535
title: >-
  Information disclosure, mitigation bypass in the Privacy component in Firefox
  for Android
summary: >-
  Information disclosure, mitigation bypass in the Privacy component in Firefox
  for Android. This vulnerability was fixed in Firefox 143.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-200
vendor: mozilla
product: firefox
affected:
  - firefox < 143.0
patched:
  - firefox 143.0
published: '2025-09-16'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T17:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-10535'
references:
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1979918'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-73/'
    label: security@mozilla.org
tags:
  - nvd
epss: 0.00312
epssPercentile: 0.21706
ingestedAt: '2026-09-30T17:13:20.707Z'
---

## Overview

Information disclosure, mitigation bypass in the Privacy component in Firefox for Android. This vulnerability was fixed in Firefox 143.

## Affected

- `firefox < 143.0`

## Remediation

Upgrade past the affected range:

- `firefox 143.0`