PT-2026-21712 · Mozilla · Firefox+2
Alex Mayorga
·
Published
2026-01-01
·
Updated
2026-04-16
·
CVE-2026-2779
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 140.8
Thunderbird versions prior to 148
Thunderbird versions prior to 140.8
Description
The software contains incorrect boundary conditions within the Networking: JAR component. This issue could potentially allow for unexpected behavior or security implications due to improper handling of data boundaries.
Recommendations
Update Firefox to version 148 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
Buffer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Firefox
Firefox Esr
Thunderbird