---
id: CVE-2025-1940
title: >-
  A select option could partially obscure the confirmation prompt shown before
  launching external apps
summary: >-
  A select option could partially obscure the confirmation prompt shown before
  launching external apps. This could be used to trick a user in to launching an
  external app unexpectedly. 

  *This issue only affects Android versions of Firefox.…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N'
cwe:
  - CWE-1021
vendor: mozilla
product: firefox
affected:
  - firefox < 136.0
patched:
  - firefox 136.0
published: '2025-03-04'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T18:10:00.190'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-1940'
references:
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1908488'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-14/'
    label: security@mozilla.org
tags:
  - nvd
epss: 0.00247
epssPercentile: 0.14388
ingestedAt: '2026-09-30T18:17:24.429Z'
---

## Overview

A select option could partially obscure the confirmation prompt shown before launching external apps. This could be used to trick a user in to launching an external app unexpectedly. 
*This issue only affects Android versions of Firefox.*. This vulnerability was fixed in Firefox 136.

## Affected

- `firefox < 136.0`

## Remediation

Upgrade past the affected range:

- `firefox 136.0`