{
    "id": "CVE-2019-1253",
    "published": "2019-09-11 22:15:16",
    "last_modified": "2026-06-17 02:28:14",
    "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-59",
    "description": "An elevation of privilege vulnerability exists when the Windows AppX Deployment Server improperly handles junctions.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-1215, CVE-2019-1278, CVE-2019-1303.",
    "epss_score": "0.11616",
    "epss_percentile": "0.95906",
    "kev": 1,
    "kev_due": "2022-04-05",
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:24:41",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-04-05."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "windows_10_1703"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1709"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1803"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1809"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1903"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_1803"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_1903"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2019"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2019-1253",
        "date_added": "2022-03-15",
        "due_date": "2022-04-05",
        "vendor": "Microsoft",
        "product": "Windows",
        "name": "Microsoft Windows AppX Deployment Server Privilege Escalation Vulnerability",
        "ransomware": 1
    },
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "47389",
            "title": "AppXSvc - Privilege Escalation",
            "date": "2019-09-16",
            "url": "https://www.exploit-db.com/exploits/47389"
        }
    ],
    "refs_list": [
        "http://packetstormsecurity.com/files/154488/AppXSvc-17763.1.amd64fre.rs5_release.180914-1434-Privilege-Escalation.html",
        "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1253",
        "http://packetstormsecurity.com/files/154488/AppXSvc-17763.1.amd64fre.rs5_release.180914-1434-Privilege-Escalation.html",
        "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1253",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1253"
    ]
}