CVE-2026-4692criticalCWE-653

Sandbox escape in the Responsive Design Mode component

28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.6epss 0.5%

exploitation probability

0.5%top 59% of all CVEs

observed exploitation

nono source reports it

Sandbox escape in the Responsive Design Mode component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

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

Affected products

Mozilla · Firefox Mozilla · Thunderbird

References