{
    "id": "CVE-2020-13393",
    "published": "2020-05-22 17:15:11",
    "last_modified": "2026-06-17 02:53:04",
    "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-120",
    "description": "An issue was discovered on Tenda AC6 V1.0 V15.03.05.19_multi_TD01, AC9 V1.0 V15.03.05.19(6318)_CN, AC9 V3.0 V15.03.06.42_multi, AC15 V1.0 V15.03.05.19_multi_TD01, and AC18 V15.03.05.19(6318_)_CN devices. There is a buffer overflow vulnerability in the router's web server -- httpd. While processing the /goform/saveParentControlInfo deviceId and time parameters for a POST request, a value is directly used in a strcpy to a local variable placed on the stack, which overwrites the return address of a function. An attacker can construct a payload to carry out arbitrary code execution attacks.",
    "epss_score": "0.03283",
    "epss_percentile": "0.88134",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-10 18:17:22",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "tendacn",
            "product": "ac15"
        },
        {
            "vendor": "tendacn",
            "product": "ac15_firmware"
        },
        {
            "vendor": "tendacn",
            "product": "ac18"
        },
        {
            "vendor": "tendacn",
            "product": "ac18_firmware"
        },
        {
            "vendor": "tendacn",
            "product": "ac6"
        },
        {
            "vendor": "tendacn",
            "product": "ac6_firmware"
        },
        {
            "vendor": "tendacn",
            "product": "ac9"
        },
        {
            "vendor": "tendacn",
            "product": "ac9_firmware"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://joel-malwarebenchmark.github.io",
        "https://joel-malwarebenchmark.github.io/blog/2020/04/28/cve-2020-13393-Tenda-vulnerability/",
        "https://joel-malwarebenchmark.github.io",
        "https://joel-malwarebenchmark.github.io/blog/2020/04/28/cve-2020-13393-Tenda-vulnerability/"
    ]
}