{
    "id": "CVE-2021-36742",
    "published": "2021-07-29 20:15:07",
    "last_modified": "2026-06-17 03:59:05",
    "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-20",
    "description": "A improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG and Worry-Free Business Security 10.0 SP1 allows a local attacker to escalate privileges on affected installations. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.",
    "epss_score": "0.01482",
    "epss_percentile": "0.72925",
    "kev": 1,
    "kev_due": "2021-11-17",
    "has_exploit": 0,
    "updated_at": "2026-09-27 18:17:30",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2021-11-17."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "windows"
        },
        {
            "vendor": "trendmicro",
            "product": "apex_one"
        },
        {
            "vendor": "trendmicro",
            "product": "officescan"
        },
        {
            "vendor": "trendmicro",
            "product": "officescan_business_security"
        },
        {
            "vendor": "trendmicro",
            "product": "worry-free_business_security"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2021-36742",
        "date_added": "2021-11-03",
        "due_date": "2021-11-17",
        "vendor": "Trend Micro",
        "product": "Apex One, Apex One as a Service, and Worry-Free Business Security",
        "name": "Trend Micro Multiple Products Improper Input Validation Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://success.trendmicro.com/jp/solution/000287796",
        "https://success.trendmicro.com/jp/solution/000287815",
        "https://success.trendmicro.com/solution/000287819",
        "https://success.trendmicro.com/solution/000287820",
        "https://success.trendmicro.com/jp/solution/000287796",
        "https://success.trendmicro.com/jp/solution/000287815",
        "https://success.trendmicro.com/solution/000287819",
        "https://success.trendmicro.com/solution/000287820",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36742"
    ]
}