PT-2026-84181
CVE-2026-84128
·
Published
2026-09-01
·
Updated
2026-10-18
Description by
CVSS 3.1
8.8
HighMetricsAV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 155
Thunderbird versions prior to 155
Description
Privilege escalation exists in the WebDriver BiDi component. WebDriver BiDi is a protocol that allows for bidirectional communication between the browser and the automation tool.
Recommendations
Update Firefox to version 155.
Update Thunderbird to version 155.
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