{
    "id": "CVE-2020-36178",
    "published": "2021-01-06 21:15:14",
    "last_modified": "2026-06-17 03:14:54",
    "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": "oal_ipt_addBridgeIsolationRules on TP-Link TL-WR840N 6_EU_0.9.1_4.16 devices allows OS command injection because a raw string entered from the web interface (an IP address field) is used directly for a call to the system library function (for iptables). NOTE: oal_ipt_addBridgeIsolationRules is not the only function that calls util_execSystem.",
    "epss_score": "0.09816",
    "epss_percentile": "0.95422",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-05 18:17:23",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "tp-link",
            "product": "tl-wr840n"
        },
        {
            "vendor": "tp-link",
            "product": "tl-wr840n_firmware"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://github.com/therealunicornsecurity/therealunicornsecurity.github.io/blob/master/_posts/2020-10-11-TPLink.md",
        "https://therealunicornsecurity.github.io/TPLink/",
        "https://www.tp-link.com/fr/support/download/tl-wr840n/v6/#Firmware",
        "https://github.com/therealunicornsecurity/therealunicornsecurity.github.io/blob/master/_posts/2020-10-11-TPLink.md",
        "https://therealunicornsecurity.github.io/TPLink/",
        "https://www.tp-link.com/fr/support/download/tl-wr840n/v6/#Firmware"
    ]
}