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 affects 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

14 Nov 2025, 16:15

Type	Values Removed	Values Added
Summary	(en) 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.	(en) 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 affects Firefox < 144 and Thunderbird < 144.

Information

Published : 2025-10-14 13:15

Updated : 2025-11-14 16:15

NVD link : CVE-2025-11719

Mitre link : CVE-2025-11719

CVE.ORG link : CVE-2025-11719

JSON object : View

Products Affected

microsoft

windows

mozilla

thunderbird
firefox

CWE

CWE-416

Use After Free

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