{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2020-25506",
  "revision": 1,
  "title": "D-Link DNS-320 Command Injection — Unauthenticated Device Takeover",
  "summary": "A command injection flaw in the web management interface of D-Link's network storage appliance (DNS-320) lets an attacker who can reach the device over the network run arbitrary system commands on it, with no credentials required.",
  "source_type": "cve",
  "severity": "critical",
  "cvss": {
    "score": 9.8,
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "version": "3.1"
  },
  "epss": 0.99968,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": true,
    "attack_complexity": "low",
    "kev_added": "2021-11-03",
    "prerequisites": "Network access to the device's web management interface"
  },
  "remediation": {
    "patch_available": true
  },
  "mitre_attack": [
    "T1190",
    "T1059"
  ],
  "kill_chain": "initial_access",
  "recommended_action": "Apply D-Link's firmware update for the DNS-320, or take the device off the network until you can.",
  "confidence": "high",
  "provenance": [
    {
      "fields": [
        "cvss",
        "references",
        "exploitation.attack_complexity"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2020-25506",
      "retrieved_at": "2026-08-07T10:39:06.627Z",
      "confidence": "high",
      "extractor": "claude-code"
    },
    {
      "fields": [
        "exploitation.known_exploited",
        "remediation.patch_available"
      ],
      "source": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "retrieved_at": "2026-08-07T10:39:06.627Z",
      "confidence": "high",
      "extractor": "claude-code"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2020-25506",
      "retrieved_at": "2026-08-07T10:39:06.627Z",
      "confidence": "high",
      "extractor": "claude-code"
    },
    {
      "fields": [
        "title",
        "summary",
        "recommended_action",
        "severity",
        "kill_chain",
        "mitre_attack",
        "exploitation.prerequisites",
        "exploitation.exploit_available",
        "tags"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2020-25506",
      "retrieved_at": "2026-08-07T10:39:06.627Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25506",
      "label": "NVD record"
    },
    {
      "type": "vendor_advisory",
      "url": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10183",
      "label": "D-Link support announcement SAP10183"
    },
    {
      "type": "cisa",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-25506",
      "label": "CISA Known Exploited Vulnerabilities entry"
    },
    {
      "type": "exploit",
      "url": "https://gist.github.com/WinMin/6f63fd1ae95977e0e2d49bd4b5f00675",
      "label": "Public proof of concept"
    }
  ],
  "published_at": "2021-02-02T13:15:12.570Z",
  "issued_at": "2026-08-07T10:39:06.627Z",
  "tags": [
    "d-link",
    "dns-320",
    "command-injection",
    "network-storage"
  ]
}