---
id: CVE-2025-14332
title: Memory safety bugs present in Firefox 145 and Thunderbird 145
summary: >-
  Memory safety bugs present in Firefox 145 and Thunderbird 145. Some of these
  bugs showed evidence of memory corruption and we presume that with enough
  effort some of these could have been exploited to run arbitrary code. This
  vulnerabili…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-787
vendor: mozilla
product: firefox
affected:
  - firefox < 146.0
  - thunderbird < 146.0
patched:
  - firefox 146.0
  - thunderbird 146.0
published: '2025-12-09'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T18:10:00.190'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-14332'
references:
  - url: >-
      https://bugzilla.mozilla.org/buglist.cgi?bug_id=1963153%2C1985058%2C1995637%2C1997118
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-92/'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-95/'
    label: security@mozilla.org
tags:
  - nvd
epss: 0.00311
epssPercentile: 0.21627
ingestedAt: '2026-09-30T17:13:20.757Z'
---

## Overview

Memory safety bugs present in Firefox 145 and Thunderbird 145. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 146 and Thunderbird 146.

## Affected

- `firefox < 146.0`
- `thunderbird < 146.0`

## Remediation

Upgrade past the affected range:

- `firefox 146.0`
- `thunderbird 146.0`