Search criteria
1 vulnerability by Flexibits
CVE-2025-8533 (GCVE-0-2025-8533)
Vulnerability from cvelistv5 – Published: 2025-08-07 09:59 – Updated: 2025-08-07 13:27
VLAI?
Title
Incorrect Authorization of XPC Service in Fantastical.app
Summary
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 ?
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Flexibits | Fantastical |
Affected:
0 , < 4.0.16
(semver)
|
Credits
Karol Mazurek - Afine Team
Sławomir Zakrzewski - Afine Team
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-8533",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-08-07T13:27:30.634544Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-08-07T13:27:42.989Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"MacOS"
],
"product": "Fantastical",
"vendor": "Flexibits",
"versions": [
{
"lessThan": "4.0.16",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Karol Mazurek - Afine Team"
},
{
"lang": "en",
"type": "finder",
"value": "S\u0142awomir Zakrzewski - Afine Team"
}
],
"datePublic": "2025-08-07T09:55:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cdiv\u003eA 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.\u003c/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003eThis issue has been resolved in version 4.0.16."
}
],
"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."
}
],
"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": {
"dateUpdated": "2025-08-07T09:59:12.324Z",
"orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
"shortName": "CERT-PL"
},
"references": [
{
"tags": [
"third-party-advisory"
],
"url": "https://cert.pl/en/posts/2025/08/CVE-2025-8533"
},
{
"tags": [
"product"
],
"url": "https://flexibits.com/fantastical"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Incorrect Authorization of XPC Service in Fantastical.app",
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
"assignerShortName": "CERT-PL",
"cveId": "CVE-2025-8533",
"datePublished": "2025-08-07T09:59:12.324Z",
"dateReserved": "2025-08-04T11:48:41.791Z",
"dateUpdated": "2025-08-07T13:27:42.989Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}