{
    "id": "CVE-2021-21805",
    "published": "2021-08-05 21:15:10",
    "last_modified": "2026-06-17 03:36:09",
    "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-78",
    "description": "An OS Command Injection vulnerability exists in the ping.php script functionality of Advantech R-SeeNet v 2.4.12 (20.10.2020). A specially crafted HTTP request can lead to arbitrary OS command execution. An attacker can send a crafted HTTP request to trigger this vulnerability.",
    "epss_score": "0.69842",
    "epss_percentile": "0.99354",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-09-30 18:17:27",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 69.8% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "advantech",
            "product": "r-seenet"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1274",
        "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1274"
    ]
}