CVE-2025-8533

6.9 mediumEPSS 0.4%

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.

Severity

CVSS 4.0

6.9 medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 35% of CVEs (scores of 2026-10-31)
CWE: CWE-863
Published: 2025-08-07
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://cert.pl/en/posts/2025/08/CVE-2025-8533
https://flexibits.com/fantastical

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