Detections
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CVE-2026-4725

critical

Description

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

References

https://www.mozilla.org/security/advisories/mfsa2026-23/

https://www.mozilla.org/security/advisories/mfsa2026-20/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-14865

https://bugzilla.mozilla.org/show_bug.cgi?id=2017108

Details

Source: Mitre, NVD

Published: 2026-03-24

Updated: 2026-04-13

Named Vulnerability: GHSA-px39-2r97-x6x6

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 10

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

Severity: Critical

EPSS

EPSS: 0.00433