PT-2026-76974
CVE-2026-74941
·
Published
2026-08-18
·
Updated
2026-09-18
Description by
CVSS 3.1
9.8
CriticalMetricsAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 154
Firefox ESR versions prior to 140.14
Firefox ESR versions prior to 153.1
Thunderbird versions prior to 154
Thunderbird versions prior to 140.14
Thunderbird versions prior to 153.1
Description
Privilege escalation exists in the Graphics: CanvasWebGL component.
Recommendations
Update Firefox to version 154.
Update Firefox ESR to version 140.14.
Update Firefox ESR to version 153.1.
Update Thunderbird to version 154.
Update Thunderbird to version 140.14.
Update Thunderbird to version 153.1.
Found an issue in the description? Have something to add? Feel free to write us 👾