{
  "id": "CVE-2021-40407",
  "url": "https://spydr.io/cve/CVE-2021-40407",
  "published": "2022-01-28T20:15:11.607Z",
  "modified": "2026-06-17T04:06:52.767Z",
  "score": 7.2,
  "severity": "high",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
  "score_source": "NVD",
  "epss": 0.47635,
  "epss_percentile": 0.98817,
  "exploited": true,
  "kev": {
    "added": "2024-12-18",
    "due": "2025-01-08",
    "action": "The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable.",
    "ransomware": "Unknown",
    "name": "Reolink RLC-410W IP Camera OS Command Injection Vulnerability",
    "notes": "https://reolink.com/product-eol/ ; https://reolink.com/download-center/ ; https://nvd.nist.gov/vuln/detail/CVE-2021-40407"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "reolink"
  ],
  "products": [
    "reolink rlc-410w firmware"
  ],
  "cwes": [
    "CWE-78"
  ],
  "description": "An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], based on DDNS type, the ddns->domain variable, that has the value of the domain parameter provided through the SetDdns API, is not validated properly. This would lead to an OS command injection. An attacker can send an HTTP request to trigger this vulnerability.",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 7.2,
    "cvss_v30": 9.1
  },
  "references": [
    {
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1424",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40407",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-40407",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}