{"schemaVersion":3,"id":"CVE-2026-19662","aliases":["ALPINE-CVE-2026-19662","UBUNTU-CVE-2026-19662","DEBIAN-CVE-2026-19662","CGA-4237-x945-99qf","CGA-4fqm-vr4p-8xm5","CGA-8p9j-wf93-vm8h","CGA-f5xj-v3gv-jfpf","CGA-fcvq-2fvv-m25f","CGA-h8cf-p568-2j6h","CGA-j975-23gp-j3g7","CGA-p83f-x922-783q","CGA-p92x-vq4g-73q4","CGA-qfv6-8pcr-462c","CGA-rjwp-9whg-wv66","CGA-w6c2-fxqg-72c9","CGA-wpvx-8x6j-xq8f","CGA-x89g-vcpw-664f"],"status":"published","duplicateOf":null,"title":null,"description":"An attacker may be able to cause a `named` resolver to abort. The attack requires inducing the victim resolver to send multiple queries for a DNSSEC-signed zone hosted by an authoritative server under the control of the attacker. If the auth responds with a particular sequence of crafted answers, and those answers arrive in a particular order with particular timing, the `named` resolver will encounter a use-after-free bug, and abort.\nThis issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.","dates":{"published":"2026-09-16T13:50:10.432Z","modified":"2026-09-17T18:45:11.717Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.9,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · 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At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory \"belongs\" to the code that operates on the new pointer.","type":"weakness","status":"Stable","abstraction":"Variant","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/416.html"}],"affected":[{"vendor":"alpine","product":"bind","name":"bind","label":"bind","ecosystem":"Alpine Linux","cpePart":null,"purl":"pkg:apk/alpine/bind","purlType":"apk","versions":[{"text":"< 9.20.29-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 9.20.29-r0","eol":null,"hubHref":null},{"vendor":"chainguard","product":"bind","name":"bind","label":"bind","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/bind","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix 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9.18.50","noFixRecorded":false,"fixedIn":null},{"text":"≥ 9.20.0, ≤ 9.20.27","noFixRecorded":false,"fixedIn":null},{"text":"≥ 9.11.3-S1, ≤ 9.18.50-S1","noFixRecorded":false,"fixedIn":null},{"text":"≥ 9.20.9-S1, ≤ 9.20.27-S1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 9.11.0, ≤ 9.18.50 | ≥ 9.20.0, ≤ 9.20.27 | ≥ 9.11.3-S1, ≤ 9.18.50-S1 | ≥ 9.20.9-S1, ≤ 9.20.27-S1","eol":{"isEol":null,"eolDate":null,"matchMethod":"name_exact","cycle":null,"product":{"name":"bind-9","label":"BIND 9","category":"server-app"}},"hubHref":"/vendor/isc/bind_9"}],"affectedCount":20,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://kb.isc.org/docs/cve-2026-19662","label":"kb.isc.org/docs/cve-2026-19662","hostname":"kb.isc.org","tags":["Vendor Advisory","REPORT"]},{"url":"https://downloads.isc.org/isc/bind9/9.20.29","label":"downloads.isc.org/isc/bind9/9.20.29","hostname":"downloads.isc.org","tags":["Patch"]},{"url":"https://security.alpinelinux.org/vuln/CVE-2026-19662","label":"security.alpinelinux.org/vuln/CVE-2026-19662","hostname":"security.alpinelinux.org","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-19662","label":"ubuntu.com/security/CVE-2026-19662","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-19662","label":"www.cve.org/CVERecord?id=CVE-2026-19662","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-19662","label":"security-tracker.debian.org/tracker/CVE-2026-19662","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://ubuntu.com/security/notices/USN-8929-1","label":"ubuntu.com/security/notices/USN-8929-1","hostname":"ubuntu.com","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["MGASA-2026-0422","OPENSUSE-SU-2026:11916-1","OPENSUSE-SU-2026:22049-1","RHSA-2026:68279","SUSE-SU-2026:24157-1","SUSE-SU-2026:4285-1","SUSE-SU-2026:4608-1","SUSE-SU-2026:4635-1","SUSE-SU-2026:4664-1","USN-8929-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:11916-1","OPENSUSE-SU-2026:22049-1","SUSE-SU-2026:24157-1","SUSE-SU-2026:4285-1","SUSE-SU-2026:4608-1","SUSE-SU-2026:4635-1","SUSE-SU-2026:4664-1","USN-8929-1"]},"timeline":[{"kind":"published","date":"2026-09-16T13:50:10.432Z","label":"Published","detail":"Vulnerability 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