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CVE-2026-2777

—
CVSS 3.1
9.8 critical
EPSS
<1%p30
Published
()
Modified
Description

Privilege escalation in the Messaging System component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Vendors
mozilla
Products
firefox, thunderbird
Weakness
CWE-269
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 (0.4%)

In the news

No ingested article mentions this CVE yet.