---
id: CVE-2025-0244
title: >-
  When redirecting to an invalid protocol scheme, an attacker could spoof the
  address bar
summary: >-
  When redirecting to an invalid protocol scheme, an attacker could spoof the
  address bar. 

  *Note: This issue only affected Android operating systems. Other operating
  systems are unaffected.*. This vulnerability was fixed in Firefox 134.
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-601
vendor: mozilla
product: firefox
affected:
  - firefox < 134.0
patched:
  - firefox 134.0
published: '2025-01-07'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T19:10:01.007'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-0244'
references:
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1929584'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-01/'
    label: security@mozilla.org
tags:
  - nvd
epss: 0.06544
epssPercentile: 0.93591
ingestedAt: '2026-09-30T19:21:07.220Z'
---

## Overview

When redirecting to an invalid protocol scheme, an attacker could spoof the address bar. 
*Note: This issue only affected Android operating systems. Other operating systems are unaffected.*. This vulnerability was fixed in Firefox 134.

## Affected

- `firefox < 134.0`

## Remediation

Upgrade past the affected range:

- `firefox 134.0`