PT-2026-21705 · Mozilla · Thunderbird+2
Michele Spagnuolo
·
Published
2026-01-01
·
Updated
2026-04-16
·
CVE-2026-2772
CVSS v3.1
9.8
Critical
| Vector | AV: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 148
Firefox ESR versions prior to 115.33
Firefox ESR versions prior to 140.8
Thunderbird versions prior to 148
Thunderbird versions prior to 140.8
Description
A use-after-free issue exists in the Audio/Video: Playback component. This can potentially allow for unexpected behavior or crashes.
Recommendations
Update Firefox to version 148 or later.
Update Firefox ESR to version 115.33 or later.
Update Firefox ESR to version 140.8 or later.
Update Thunderbird to version 148 or later.
Update Thunderbird to version 140.8 or later.
Fix
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Firefox
Firefox Esr
Thunderbird