CVE-2026-84637
NONE—CVSS v3
—CVSS v2
—
EPSS (exploit probability)
—CWE
Description
Malicious calendar invitations could use file URI attachments to launch local or network-hosted executables on Windows, bypassing Thunderbird's normal executable attachment protections. With the new invitation display enabled, the attachment could also appear under a misleading filename. This vulnerability was fixed in Thunderbird 154 and Thunderbird 153.2.
Affected routers (0)
No routers currently mapped to this CVE in our database.