PT-2026-111476
CVE-2026-109755
·
Published
2026-10-13
·
Updated
2026-10-20
Description by
CVSS 3.1
9.6
CriticalMetricsAV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 158
Thunderbird versions prior to 158
Description
A sandbox escape exists within the DOM: Content Processes component. A sandbox is a security mechanism used to isolate running applications from the rest of the system to prevent malicious code from accessing sensitive data or resources.
Recommendations
Update Firefox to version 158 or later.
Update Thunderbird to version 158 or later.
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