Incorrect boundary conditions, uninitialized memory in the JavaScript Engine component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
History

Mon, 13 Apr 2026 14:30:00 +0000

Type Values Removed Values Added
Description Incorrect boundary conditions, uninitialized memory in the JavaScript Engine component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9. Incorrect boundary conditions, uninitialized memory in the JavaScript Engine component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

Thu, 26 Mar 2026 00:15:00 +0000


Wed, 25 Mar 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 25 Mar 2026 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla firefox Esr
Vendors & Products Mozilla firefox Esr

Tue, 24 Mar 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Weaknesses CWE-908
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
Vendors & Products Mozilla
Mozilla firefox
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H'}


Tue, 24 Mar 2026 20:30:00 +0000

Type Values Removed Values Added
Description Incorrect boundary conditions, uninitialized memory in the JavaScript Engine component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9. Incorrect boundary conditions, uninitialized memory in the JavaScript Engine component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.
References

Tue, 24 Mar 2026 12:45:00 +0000

Type Values Removed Values Added
Description Incorrect boundary conditions, uninitialized memory in the JavaScript Engine component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.
Title Incorrect boundary conditions, uninitialized memory in the JavaScript Engine component
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2026-03-24T12:30:39.453Z

Updated: 2026-04-13T13:51:01.318Z

Reserved: 2026-03-23T23:22:33.703Z

Link: CVE-2026-4716

cve-icon Vulnrichment

Updated: 2026-03-25T19:24:48.332Z

cve-icon NVD

Status : Modified

Published: 2026-03-24T13:16:07.503

Modified: 2026-04-13T15:17:43.250

Link: CVE-2026-4716

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-03-24T12:30:39Z

Links: CVE-2026-4716 - Bugzilla