{"id":"CVE-2015-5470","url":"https://www.cyber-defence.io/tools/cve/CVE-2015-5470","generatedAt":"2026-10-27T19:52:47.454Z","title":"The label decompression functionality in PowerDNS Recursor before 3.6.4 and 3.7.x before 3.7.3 and Authoritative (Auth) Server before 3.3.3 and 3.4.x before 3.4.5 allows remote attackers to cause a denial of service (CPU consumption or crash) via a…","description":"The label decompression functionality in PowerDNS Recursor before 3.6.4 and 3.7.x before 3.7.3 and Authoritative (Auth) Server before 3.3.3 and 3.4.x before 3.4.5 allows remote attackers to cause a denial of service (CPU consumption or crash) via a request with a long name that refers to itself.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1868.","published":"2015-11-02T19:59:10.000Z","lastModified":"2026-06-17T00:29:11.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":7.8,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C"},"cwe":["CWE-399"],"affected":["powerdns/authoritative","powerdns/recursor"],"epss":{"score":0.11284,"percentile":0.95943,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 11.3%, higher than 96% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://www.openwall.com/lists/oss-security/2015/07/07/6","source":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2015/07/10/8","source":"cve@mitre.org"},{"url":"https://doc.powerdns.com/md/security/powerdns-advisory-2015-01/","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2015/07/07/6","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2015/07/10/8","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://doc.powerdns.com/md/security/powerdns-advisory-2015-01/","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2015-5470","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}