CVE Explorer

CVE-2025-8533

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.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:22cca9affb5de5b920b337bfd948a1a722d694af8be99f37340a91d3fd8ca480

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","platforms":["MacOS"],"product":"Fantastical","vendor":"Flexibits","versions":[{"lessThan":"4.0.16","status":"affected","version":"0","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:32028b255c51cc806bd6130dc91a182343ce348ac8fb4c2238402e817c74a912 · sha256:760bca231e4ef475… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"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":"LO…

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:32028b255c51cc806bd6130dc91a182343ce348ac8fb4c2238402e817c74a912 · sha256:760bca231e4ef475… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-863","description":"CWE-863 Incorrect Authorization","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:32028b255c51cc806bd6130dc91a182343ce348ac8fb4c2238402e817c74a912 · sha256:760bca231e4ef475… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"tags":["third-party-advisory"],"url":"https://cert.pl/en/posts/2025/08/CVE-2025-8533"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:32028b255c51cc806bd6130dc91a182343ce348ac8fb4c2238402e817c74a912 · sha256:760bca231e4ef475… · /containers/cna/references/0

{"tags":["product"],"url":"https://flexibits.com/fantastical"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:32028b255c51cc806bd6130dc91a182343ce348ac8fb4c2238402e817c74a912 · sha256:760bca231e4ef475… · /containers/cna/references/1

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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