Incorrect Authorization of XPC Service in Fantastical.app
Vulnerability Description
A vulnerability was identified in the XPC services of Fantastical. The services failed to implement proper client authorization checks in its listener:shouldAcceptNewConnection method, unconditionally accepting requests from any local process. As a result, any local, unprivileged process could connect to the XPC service and access its methods. This issue has been resolved in version 4.0.16.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-8533
Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Karol Mazurek - Afine Team
- Sławomir Zakrzewski - Afine Team
Affected Vendor
Flexibits
View all reports →