{
    "id": "CVE-2021-27648",
    "published": "2021-04-28 08:15:07",
    "last_modified": "2026-06-17 03:45:17",
    "cvss_score": "9.0",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
    "cwe": "CWE-610",
    "description": "Externally controlled reference to a resource in another sphere in quarantine functionality in Synology Antivirus Essential before 1.4.8-2801 allows remote authenticated users to obtain privilege via unspecified vectors.",
    "epss_score": "0.02843",
    "epss_percentile": "0.86304",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-11 18:17:25",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "synology",
            "product": "antivirus_essential"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://www.synology.com/security/advisory/Synology_SA_21_15",
        "https://www.synology.com/security/advisory/Synology_SA_21_15"
    ]
}