{"id":"CVE-2026-4893","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-4893","generatedAt":"2026-10-28T06:13:25.912Z","title":"An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RFC 7871 client subnet information.","description":"An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RFC 7871 client subnet information.","published":"2026-05-11T18:16:42.000Z","lastModified":"2026-06-17T10:57:25.000Z","status":"Awaiting Analysis","sourceIdentifier":"cret@cert.org","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"cwe":[],"affected":[],"epss":{"score":0.01784,"percentile":0.78175,"date":"2026-10-27","history":[{"date":"2026-09-24","score":0.00578,"percentile":0.45182},{"date":"2026-10-25","score":0.01784,"percentile":0.78134}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.78%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/NixOS/nixpkgs/pull/519082","source":"cret@cert.org"},{"url":"https://github.com/NixOS/nixpkgs/pull/519093","source":"cret@cert.org"},{"url":"https://github.com/pi-hole/FTL/releases/tag/v6.6.2","source":"cret@cert.org"},{"url":"https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html","source":"cret@cert.org"},{"url":"https://thekelleys.org.uk/dnsmasq/CVE/","source":"cret@cert.org"},{"url":"https://www.kb.cert.org/vuls/id/471747","source":"cret@cert.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-4893","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."}