CVE-2025-14333

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-14333
Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, 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 affects Firefox < 146, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.

8.1 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1966501%2C1997639 Broken Link Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2025-92/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-94/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-95/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-96/ Vendor Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
History

13 Jan 2026, 18:16

Type Values Removed Values Added
CWE CWE-119

10 Dec 2025, 20:10

Type Values Removed Values Added
References () https://bugzilla.mozilla.org/buglist.cgi?bug_id=1966501%2C1997639 - () https://bugzilla.mozilla.org/buglist.cgi?bug_id=1966501%2C1997639 - Broken Link, Issue Tracking
References () https://www.mozilla.org/security/advisories/mfsa2025-92/ - () https://www.mozilla.org/security/advisories/mfsa2025-92/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-94/ - () https://www.mozilla.org/security/advisories/mfsa2025-94/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-95/ - () https://www.mozilla.org/security/advisories/mfsa2025-95/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-96/ - () https://www.mozilla.org/security/advisories/mfsa2025-96/ - Vendor Advisory
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
First Time Mozilla
Mozilla firefox
Mozilla thunderbird
CWE CWE-787

10 Dec 2025, 15:15

Type Values Removed Values Added
References
  • () https://www.mozilla.org/security/advisories/mfsa2025-95/ -
  • () https://www.mozilla.org/security/advisories/mfsa2025-96/ -
Summary (en) Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, 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 affects Firefox < 146 and Firefox ESR < 140.6. (en) Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, 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 affects Firefox < 146, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.

09 Dec 2025, 16:17

Type Values Removed Values Added
New CVE
Information

Published : 2025-12-09 16:17

Updated : 2026-01-13 18:16

NVD link : CVE-2025-14333

Mitre link : CVE-2025-14333

CVE.ORG link : CVE-2025-14333

JSON object : View

Products Affected

mozilla

  • thunderbird
  • firefox
CWE
CWE-787

Out-of-bounds Write

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer