CVE-2025-11719

Starting in Thunderbird 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 was fixed in Firefox 144 and Thunderbird 144.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1991950	Issue Tracking Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-81/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-84/	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:a:mozilla:firefox::::::::
	cpe:2.3:a:mozilla:thunderbird::::::::

cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

History

18 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) A partir de Thunderbird 143, el uso de la API de mensajería nativa por extensiones web en Windows podría provocar fallos causados por corrupción de memoria de uso después de liberación. Esta vulnerabilidad afecta a Firefox < 144 y Thunderbird < 144.

Information

Published : 2025-10-14 13:15

Updated : 2026-10-18 21:10

NVD link : CVE-2025-11719

Mitre link : CVE-2025-11719

CVE.ORG link : CVE-2025-11719

JSON object : View

Products Affected

mozilla

firefox
thunderbird

microsoft

windows

CWE

CWE-416

Use After Free

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