PT-2026-27384 · Mozilla · Firefox+2
Sajeeb Lohani
·
Published
2026-01-01
·
Updated
2026-04-17
·
CVE-2026-4685
CVSS v2.0
7.8
High
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 149
Firefox ESR versions prior to 115.34
Firefox ESR versions prior to 140.9
Thunderbird versions prior to 149
Thunderbird versions prior to 140.9
Description
The Graphics: Canvas2D component contains incorrect boundary conditions. This issue may allow for unexpected behavior or potential security implications.
Recommendations
Update Firefox to version 149 or later.
Update Firefox ESR to version 115.34 or later.
Update Firefox ESR to version 140.9 or later.
Update Thunderbird to version 149 or later.
Update Thunderbird to version 140.9 or later.
Fix
Improper Check for Exceptional Conditions
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Weakness Enumeration
Related Identifiers
Affected Products
Firefox
Firefox Esr
Thunderbird