CVE-2025-11719

critical · 9.8

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.

9.8

CVSS

0.4%

EPSS (exploit prob.)

29th

EPSS percentile

2025-10-14

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-416

Affected products

Vendor	Product	Affected versions
mozilla	firefox	>= 143.0, < 144.0
mozilla	thunderbird	>= 143.0, < 144.0
microsoft	windows	all versions

Check a specific version with /api/v1/cve/match.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1991950
https://www.mozilla.org/security/advisories/mfsa2025-81/
https://www.mozilla.org/security/advisories/mfsa2025-84/

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2025-11719