Starting in Firefox 143, the use of the native messaging API by web extensions on Windows could lead to crashes caused by use-after-free memory corruption. This vulnerability affects Firefox < 144 and Thunderbird < 144.
History

Wed, 15 Oct 2025 18:30:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla thunderbird
CPEs cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Vendors & Products Mozilla thunderbird

Wed, 15 Oct 2025 18:15:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft
Microsoft windows
Mozilla
Mozilla firefox
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows
Mozilla
Mozilla firefox

Wed, 15 Oct 2025 14:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

ssvc

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

cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Wed, 15 Oct 2025 12:30:00 +0000

Type Values Removed Values Added
Title thunderbird: firefox: Use-after-free caused by the native messaging web extension API on Windows
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

threat_severity

Moderate


Tue, 14 Oct 2025 13:00:00 +0000

Type Values Removed Values Added
Description Starting in Firefox 143, the use of the native messaging API by web extensions on Windows could lead to crashes caused by use-after-free memory corruption. This vulnerability affects Firefox < 144 and Thunderbird < 144.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2025-10-14T12:27:36.841Z

Updated: 2025-10-15T13:24:04.863Z

Reserved: 2025-10-13T19:50:20.373Z

Link: CVE-2025-11719

cve-icon Vulnrichment

Updated: 2025-10-15T13:20:57.558Z

cve-icon NVD

Status : Analyzed

Published: 2025-10-14T13:15:38.287

Modified: 2025-10-15T18:18:09.433

Link: CVE-2025-11719

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-10-14T12:27:36Z

Links: CVE-2025-11719 - Bugzilla