CVE-2026-4725

CRITICAL

Sandbox escape due to use-after-free in the Graphics: Canvas2D component

Title source: cna
STIX 2.1

Description

Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.

References (3)

Scores

CVSS v3 10.0
EPSS 0.0001
EPSS Percentile 2.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-416
Status published
Products (5)
mozilla/firefox < 149.0
Mozilla/Firefox 149
Mozilla/Firefox unspecified - 149
Mozilla/Thunderbird 149
Mozilla/Thunderbird unspecified - 149
Published Mar 24, 2026
Tracked Since Mar 24, 2026