{"id":"CVE-2015-5477","published":"2015-07-29T14:59:05Z","modified":"2026-10-09T19:12:37Z","title":"ISC BIND Data Processing Errors Vulnerability","vendor":"ISC","product":"BIND","tier":"core","eol":null,"description":{"text":"named in ISC BIND 9.x before 9.9.7-P2 and 9.10.x before 9.10.2-P3 allows remote attackers to cause a denial of service (REQUIRE assertion failure and daemon exit) via TKEY queries.","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is a data-processing error in the named component of ISC BIND, the widely used DNS server software, affecting 9.x releases before 9.9.7-P2 and 9.10.x releases before 9.10.2-P3. A remote attacker can send crafted TKEY queries to trigger a REQUIRE assertion failure that makes the named daemon exit, causing denial of service; no authentication, user interaction, or special configuration is required beyond network reachability to the server.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:10:57Z"},"cvss":{"score":7.5,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.99584,"percentile":0.99946,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2026-10-08","dueDate":"2026-10-11","ransomware":false,"requiredAction":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","notes":"This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://web.archive.org/web/20150729014733/https://kb.isc.org/article/AA-01272 ; https://access.redhat.com/errata/RHSA-2015:1513.html; https://supportportal.juniper.net/s/article/2016-01-Security-Bulletin-Junos-Vulnerability-in-ISC-BIND-named-CVE-2015-5477 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2015-5477","provenance":"source"},"vulncheckKev":{"dateAdded":"2015-08-02","exploitedFirstSeen":"2015-08-02","ransomware":false,"evidence":[{"url":"https://blog.sucuri.net/2015/08/bind9-denial-of-service-exploit-in-the-wild.html","date":"2015-08-02"},{"url":"https://www.cisa.gov/news-events/cybersecurity-advisories/aa26-281a","date":"2026-10-08"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2026-10-08"}],"evidenceTotal":3,"provenance":"source"},"exploited":true,"otx":{"pulseCount":24,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-19","name":null},{"id":"CWE-617","name":"Reachable Assertion"}],"references":[{"url":"http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10718","tags":["Mitigation","Third Party Advisory"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163006.html","tags":["Mailing List","Third Party Advisory"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163007.html","tags":["Mailing List","Third Party Advisory"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163015.html","tags":["Mailing List","Third Party Advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00043.html","tags":["Mailing List","Third Party Advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00044.html","tags":["Mailing List","Third 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service","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"allows remote attackers to cause a denial of service","start":66,"end":118}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1499.004","name":"Application or System Exploitation","tactics":["impact"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Assertion failure crashes the named daemon","mappingType":"primary_impact","evidence":[{"from":"description","quote":"cause a denial of service (REQUIRE assertion failure and daemon exit)","start":93,"end":162}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2015-5432","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-5432","exploited":true,"exploitedSince":"2026-10-08","provenance":"source"},"exploits":[{"id":37721,"url":"https://www.exploit-db.com/exploits/37721","title":"ISC BIND 9 - TKEY (PoC)","type":"dos","platform":"multiple","date":"2015-08-01","verified":true,"provenance":"source"},{"id":37723,"url":"https://www.exploit-db.com/exploits/37723","title":"ISC BIND 9 - TKEY Remote Denial of Service 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Service","module":"auxiliary/dos/dns/bind_tkey","type":"auxiliary","disclosureDate":"2015-07-28","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/dos/dns/bind_tkey.rb"}],"first":{"date":"2015-07-28","source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/dos/dns/bind_tkey.rb"},"provenance":"source"},"exploitRefs":["https://www.exploit-db.com/exploits/37721/","http://packetstormsecurity.com/files/132926/BIND-TKEY-Query-Denial-Of-Service.html","https://www.exploit-db.com/exploits/37723/"],"flow":[{"stage":"exploitation","techniques":["T1190"],"provenance":"ai"},{"stage":"primary","techniques":["T1499.004"],"provenance":"ai"}],"timeline":[{"date":"2015-07-28","kind":"exploit-public","label":"First public exploit: Metasploit; later: PoC-in-GitHub 2015-07-31, Exploit-DB 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