{
    "id": "CVE-2020-26728",
    "published": "2022-02-11 19:15:08",
    "last_modified": "2026-06-17 03:08:19",
    "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": null,
    "description": "A vulnerability was discovered in Tenda AC9 v3.0 V15.03.06.42_multi and Tenda AC9 V1.0 V15.03.05.19(6318)_CN which allows for remote code execution via shell metacharacters in the guestuser field to the __fastcall function with a POST request.",
    "epss_score": "0.03767",
    "epss_percentile": "0.89649",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-09 18:17:25",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "tenda",
            "product": "ac9"
        },
        {
            "vendor": "tenda",
            "product": "ac9_firmware"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://github.com/Lyc-heng/Router/blob/main/Tenda/rce1.md",
        "https://github.com/Lyc-heng/routers/blob/a80b30bccfc9b76f3a4868ff28ad5ce2e0fca180/routers/rce1.md",
        "https://github.com/Lyc-heng/routers/blob/main/routers/rce1.md",
        "https://github.com/Lyc-heng/Router/blob/main/Tenda/rce1.md",
        "https://github.com/Lyc-heng/routers/blob/a80b30bccfc9b76f3a4868ff28ad5ce2e0fca180/routers/rce1.md",
        "https://github.com/Lyc-heng/routers/blob/main/routers/rce1.md"
    ]
}