{"id":"CVE-2025-8533","state":"PUBLISHED","title":"Incorrect Authorization of XPC Service in Fantastical.app","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.\n\n\n\n\nThis issue has been resolved in version 4.0.16.","publishedAt":"2025-08-07T09:59:12.324Z","updatedAt":"2025-08-07T13:27:42.989Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"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","source":"CERT-PL"},"assigner":"CERT-PL","products":["Flexibits Fantastical"],"affected":[{"vendor":"Flexibits","product":"Fantastical","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"4.0.16","versionType":"semver"}],"platforms":["MacOS"]}],"references":["https://cert.pl/en/posts/2025/08/CVE-2025-8533","https://flexibits.com/fantastical"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/8xxx/CVE-2025-8533.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-8533","state":"PUBLISHED","datePublished":"2025-08-07T09:59:12.324Z","dateUpdated":"2025-08-07T13:27:42.989Z","assignerShortName":"CERT-PL","assignerOrgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","dateReserved":"2025-08-04T11:48:41.791Z"},"containers":{"cna":{"title":"Incorrect Authorization of XPC Service in Fantastical.app","descriptions":[{"lang":"en","value":"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.\n\n\n\n\nThis issue has been resolved in version 4.0.16."}],"affected":[{"vendor":"Flexibits","product":"Fantastical","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"4.0.16","versionType":"semver"}],"platforms":["MacOS"]}],"references":[{"url":"https://cert.pl/en/posts/2025/08/CVE-2025-8533","tags":["third-party-advisory"]},{"url":"https://flexibits.com/fantastical","tags":["product"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","description":"CWE-863 Incorrect Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"CERT-PL","orgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","dateUpdated":"2025-08-07T09:59:12.324Z"},"credits":[{"lang":"en","type":"finder","value":"Karol Mazurek - Afine Team"},{"lang":"en","type":"finder","value":"Sławomir Zakrzewski - Afine Team"}],"datePublic":"2025-08-07T09:55:00.000Z","source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-08-07T13:27:30.634544Z","id":"CVE-2025-8533","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-08-07T13:27:42.989Z"}}]}}}