{
    "id": "CVE-2026-56155",
    "published": "2026-07-14 17:17:09",
    "last_modified": "2026-07-15 14:18:24",
    "cvss_score": "7.8",
    "cvss_severity": "HIGH",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-1220",
    "description": "Insufficient granularity of access control in Active Directory Federation Services (AD FS) allows an authorized attacker to elevate privileges locally.",
    "epss_score": "0.00346",
    "epss_percentile": "0.25600",
    "kev": 1,
    "kev_due": "2026-07-28",
    "has_exploit": 0,
    "updated_at": "2026-09-27 18:18:00",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2026-07-28."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "windows_10_1607"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1809"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2012"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2016"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2019"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2022"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2025"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2026-56155",
        "date_added": "2026-07-14",
        "due_date": "2026-07-28",
        "vendor": "Microsoft",
        "product": "Active Directory Federation Services",
        "name": "Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability ",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56155",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-56155"
    ]
}