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CVE-2026-4729

—
CVSS 3.1
9.8 critical
EPSS
<1%p26
Published
()
Modified
Description

Memory safety bugs present in Firefox 148 and Thunderbird 148. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 149 and Thunderbird 149.

Vendors
mozilla
Products
firefox, thunderbird
Weakness
CWE-120, CWE-825
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.