{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2026-65400",
  "revision": 1,
  "title": "Apple macOS Screen Sharing — authentication bypass, unauthenticated access",
  "summary": "A state-management flaw in macOS lets an attacker on the network log in to the built-in Screen Sharing service without valid credentials, giving them remote control of the Mac. Apple says it is being exploited in the wild.",
  "source_type": "cve",
  "severity": "critical",
  "cvss": {
    "score": 9.8,
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "version": "3.1"
  },
  "epss": 0.10461,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": false,
    "attack_complexity": "low",
    "kev_added": "2026-08-18",
    "prerequisites": "Network reachability to a Mac with Screen Sharing (remote desktop) enabled; no credentials or user interaction needed."
  },
  "remediation": {
    "patch_available": true,
    "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"
    ]
  },
  "mitre_attack": [
    "T1190"
  ],
  "kill_chain": "initial_access",
  "recommended_action": "Update macOS to Tahoe 26.7/26.6.1, Sequoia 15.7.9, Sonoma 14.8.9 or Golden Gate 27 now; until then turn off Screen Sharing or block it from untrusted networks.",
  "confidence": "high",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "references",
        "published_at"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2026-65400",
      "retrieved_at": "2026-09-22T06:10:25.213Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "exploitation.known_exploited",
        "exploitation.kev_added"
      ],
      "source": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "retrieved_at": "2026-09-22T06:10:25.213Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2026-65400",
      "retrieved_at": "2026-09-22T06:10:25.213Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "title",
        "summary",
        "severity",
        "remediation",
        "mitre_attack",
        "kill_chain",
        "recommended_action",
        "confidence",
        "tags",
        "exploitation.prerequisites"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2026-65400",
      "retrieved_at": "2026-09-22T06:10:25.213Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-65400",
      "label": "NVD record"
    },
    {
      "type": "cisa",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "label": "CISA Known Exploited Vulnerabilities catalog"
    },
    {
      "type": "vendor_advisory",
      "url": "https://support.apple.com/en-us/148170"
    },
    {
      "type": "vendor_advisory",
      "url": "https://support.apple.com/en-us/148171"
    },
    {
      "type": "vendor_advisory",
      "url": "https://support.apple.com/en-us/148172"
    }
  ],
  "published_at": "2026-08-06T22:18:14.533Z",
  "issued_at": "2026-09-22T06:10:25.213Z",
  "tags": [
    "apple",
    "macos",
    "screen-sharing",
    "authentication-bypass",
    "kev"
  ]
}