Unrated
macOS — security advisory
An authentication issue was addressed with improved state management. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1, macOS Tahoe 26.7. An attacker on the network may be able to authenticate to Screen Sharing without valid credentials.
- Products
- macOS
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-65400
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 21:39 UTC · Revision 1
Source evidence
An authentication issue was addressed with improved state management. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1, macOS Tahoe 26.7. An attacker on the network may be able to authenticate to Screen Sharing without valid credentials.
cve:CVE-2026-65400
macOS
Fixed versions: Not specified
Complete source record
{
"id": "3a9087b1fe17293d2622c31339c5438b78413efc677d53ad4991c88ce76851c8",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-65400",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2026-65400",
"summary": "An authentication issue was addressed with improved state management. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1, macOS Tahoe 26.7. An attacker on the network may be able to authenticate to Screen Sharing without valid credentials.",
"evidence": "cve:CVE-2026-65400",
"products": [
{
"name": {
"value": "macOS",
"evidence": "/containers/cna/affected/0/product"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CVE-2026-65400",
"aliases": [
"CVE-2026-65400"
],
"metrics": [],
"affected": [
{
"vendor": "Apple",
"product": "macOS",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "14.8.9",
"versionType": "custom"
},
{
"status": "affected",
"version": "0",
"lessThan": "15.7.9",
"versionType": "custom"
},
{
"status": "affected",
"version": "0",
"lessThan": "26.6.1",
"versionType": "custom"
},
{
"status": "affected",
"version": "0",
"lessThan": "26.7",
"versionType": "custom"
},
{
"status": "affected",
"version": "0",
"lessThan": "27",
"versionType": "custom"
}
]
}
],
"modified": "2026-10-26T20:36:23.984Z",
"provider": "cve",
"references": [
"https://support.apple.com/en-us/148170",
"https://support.apple.com/en-us/148171",
"https://support.apple.com/en-us/148172",
"https://support.apple.com/en-us/149035",
"https://support.apple.com/en-us/149042"
],
"provider_metadata": {
"adp": [
{
"title": "CISA ADP Vulnrichment",
"metrics": [
{
"cvssV3_1": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 9.8,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
}
},
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-65400",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-08-14T00:00:00+00:00"
}
}
},
{
"other": {
"type": "kev",
"content": {
"dateAdded": "2026-08-18",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-65400"
}
}
}
],
"timeline": [
{
"lang": "en",
"time": "2026-08-18T00:00:00.000Z",
"value": "CVE-2026-65400 added to CISA KEV"
}
],
"references": [
{
"url": "https://advisories.ncsc.nl/2026/ncsc-2026-0280.html",
"tags": [
"third-party-advisory"
]
},
{
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-65400",
"tags": [
"government-resource"
]
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"type": "CWE",
"cweId": "CWE-287",
"description": "CWE-287 Improper Authentication"
}
]
}
],
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-08-19T03:55:50.505Z"
}
},
{
"title": "CVE Program Container",
"references": [
{
"url": "http://seclists.org/fulldisclosure/2026/Aug/36"
},
{
"url": "http://seclists.org/fulldisclosure/2026/Aug/37"
}
],
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2026-08-13T23:15:32.774Z"
}
}
],
"cna": {
"orgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
"shortName": "apple",
"dateUpdated": "2026-10-26T20:36:23.984Z"
}
}
},
"related_cves": [
{
"value": "CVE-2026-65400",
"evidence": "/cveMetadata/cveId"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-cve",
"document_id": 344401,
"published_at": "2026-08-06T18:17:18.263+00:00"
}