PT-2026-84524 · Mozilla · Thunderbird
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
Thunderbird versions prior to 153.2
Thunderbird versions prior to 154
Description
Malicious calendar invitations can utilize file URI attachments to execute local or network-hosted executables on Windows systems, bypassing standard executable attachment protections. When the new invitation display is enabled, these attachments may be presented with misleading filenames.
Recommendations
Update to version 153.2.
Update to version 154.
Fix
Unrestricted File Upload
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Weakness Enumeration
Related Identifiers
Affected Products
Thunderbird