{"id":"CVE-2026-27831","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-27831","generatedAt":"2026-10-28T06:14:19.061Z","title":"Version 1.3 has a heap-based out-of-bounds read that leads to denial of service.","description":"rldns is an open source DNS server. Version 1.3 has a heap-based out-of-bounds read that leads to denial of service. Version 1.4 contains a patch for the issue.","published":"2026-02-26T01:16:25.000Z","lastModified":"2026-06-17T10:27:45.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-125"],"affected":[],"epss":{"score":0.00494,"percentile":0.42206,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.49%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/bluedragonsecurity/rldns-1.3-heap-out-of-bounds-vulnerability-fixed-in-rldns-1.4","source":"security-advisories@github.com"},{"url":"https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4","source":"security-advisories@github.com"},{"url":"https://github.com/bluedragonsecurity/rldns_archives/blob/main/diff/rldns-1.4.diff","source":"security-advisories@github.com"},{"url":"https://medium.com/@w1sdom/heap-based-buffer-over-read-vulnerability-in-rldns-1-3-5da3bccdc031","source":"security-advisories@github.com"},{"url":"https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-27831","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."}