{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2015-5477",
  "revision": 1,
  "title": "ISC BIND — TKEY Query Crash",
  "summary": "A crafted transaction key (TKEY) query makes the named daemon in Internet Systems Consortium (ISC) name server software (BIND) fail an assertion and exit, so a remote attacker can cause a denial of service. Public exploit code exists.",
  "source_type": "cve",
  "severity": "high",
  "cvss": {
    "score": 7.5,
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
    "version": "3.1"
  },
  "epss": 0.99584,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": true,
    "attack_complexity": "low",
    "kev_added": "2026-10-08",
    "kev_due": "2026-10-11",
    "prerequisites": "The ability to send queries to an affected name server."
  },
  "remediation": {
    "patch_available": true,
    "fixed_in": [
      "BIND 9.9.7-P2",
      "BIND 9.10.2-P3"
    ]
  },
  "kill_chain": "impact",
  "recommended_action": "Update BIND to 9.9.7-P2 or 9.10.2-P3 or later.",
  "confidence": "high",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "published_at",
        "references"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2015-5477",
      "retrieved_at": "2026-11-05T08:06:18.021Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "exploitation.known_exploited",
        "exploitation.kev_added",
        "exploitation.kev_due"
      ],
      "source": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "retrieved_at": "2026-11-05T08:06:18.021Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2015-5477",
      "retrieved_at": "2026-11-05T08:06:18.021Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "title",
        "subtitle",
        "summary",
        "severity",
        "remediation",
        "mitre_attack",
        "kill_chain",
        "recommended_action",
        "confidence",
        "tags",
        "exploitation.prerequisites"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2015-5477",
      "retrieved_at": "2026-11-05T08:06:18.021Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-5477",
      "label": "NVD record"
    },
    {
      "type": "cisa",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "label": "CISA Known Exploited Vulnerabilities catalog"
    },
    {
      "type": "vendor_advisory",
      "url": "http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10718"
    },
    {
      "type": "vendor_advisory",
      "url": "https://kb.isc.org/article/AA-01272"
    },
    {
      "type": "exploit",
      "url": "https://www.exploit-db.com/exploits/37721/"
    }
  ],
  "published_at": "2015-07-29T14:59:05.397Z",
  "issued_at": "2026-11-05T08:06:18.021Z",
  "tags": [
    "isc",
    "bind",
    "dns",
    "denial-of-service"
  ]
}