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CVE-2025-11721

—
CVSS 3.1
9.8 critical
EPSS
<1%p27
Published
()
Modified
Description

Memory safety bug present in Firefox 143 and Thunderbird 143. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 144 and Thunderbird 144.

Vendors
mozilla
Products
firefox, thunderbird
Weakness
CWE-119
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD CVE.org GitHub PoCs EPSS (0.3%)

In the news

No ingested article mentions this CVE yet.