{
    "id": "CVE-2021-42237",
    "published": "2021-11-05 10:15:08",
    "last_modified": "2026-07-09 13:57:14",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-502",
    "description": "Sitecore XP 7.5 Initial Release to Sitecore XP 8.2 Update-7 is vulnerable to an insecure deserialization attack where it is possible to achieve remote command execution on the machine. No authentication or special configuration is required to exploit this vulnerability.",
    "epss_score": "0.97566",
    "epss_percentile": "0.99901",
    "kev": 1,
    "kev_due": "2022-04-15",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:28:18",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-04-15."
    },
    "products": [
        {
            "vendor": "sitecore",
            "product": "experience_platform"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2021-42237",
        "date_added": "2022-03-25",
        "due_date": "2022-04-15",
        "vendor": "Sitecore",
        "product": "XP",
        "name": "Sitecore XP Remote Command Execution Vulnerability",
        "ransomware": 1
    },
    "exploits": [],
    "refs_list": [
        "http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html",
        "https://blog.assetnote.io/2021/11/02/sitecore-rce/",
        "https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776",
        "http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html",
        "https://blog.assetnote.io/2021/11/02/sitecore-rce/",
        "https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42237"
    ]
}