PT-2026-33932 · Mozilla+1 · Firefox+2
Published
2026-04-21
·
Updated
2026-05-19
·
CVE-2026-6746
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 150
Firefox ESR versions prior to 115.35
Firefox ESR versions prior to 140.10
Thunderbird versions prior to 150
Thunderbird versions prior to 140.10
Description
A use-after-free issue exists in the DOM: Core & HTML component. Use-after-free is a memory corruption flaw that occurs when an application continues to use a pointer after it has been freed.
Recommendations
Update Firefox to version 150 or later.
Update Firefox ESR to version 115.35 or later.
Update Firefox ESR to version 140.10 or later.
Update Thunderbird to version 150 or later.
Update Thunderbird to version 140.10 or later.
Fix
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Firefox
Rocky Linux
Thunderbird