{
    "id": "CVE-2021-35394",
    "published": "2021-08-16 12:15:07",
    "last_modified": "2026-06-17 03:57:29",
    "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": "Realtek Jungle SDK version v2.x up to v3.4.14B provides a diagnostic tool called 'MP Daemon' that is usually compiled as 'UDPServer' binary. The binary is affected by multiple memory corruption vulnerabilities and an arbitrary command injection vulnerability that can be exploited by remote unauthenticated attackers.",
    "epss_score": "0.99861",
    "epss_percentile": "0.99961",
    "kev": 1,
    "kev_due": "2021-12-24",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:27:58",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2021-12-24."
    },
    "products": [
        {
            "vendor": "realtek",
            "product": "rtl819x_jungle_software_development_kit"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2021-35394",
        "date_added": "2021-12-10",
        "due_date": "2021-12-24",
        "vendor": "Realtek",
        "product": "Jungle Software Development Kit (SDK)",
        "name": "Realtek Jungle SDK Remote Code Execution Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain",
        "https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en",
        "https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf",
        "https://www.securityfocus.com/archive/1/534765",
        "https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain",
        "https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en",
        "https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf",
        "https://www.securityfocus.com/archive/1/534765",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35394"
    ]
}