{"schemaVersion":3,"id":"USN-8282-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"unbound vulnerabilities\n\nAndrew Griffiths discovered that Unbound did not properly handle certain\nDNSCrypt packets. A remote attacker could possibly use this issue to cause\nUnbound to crash, resulting in a denial of service. (CVE-2026-32792)\n\nQifan Zhang discovered that Unbound incorrectly handled DNSSEC validation\nin certain situations. A remote attacker could possibly use this issue to\nexecute arbitrary code. This issue only affected Ubuntu 24.04 LTS,\nUbuntu 25.10, and Ubuntu 26.04 LTS. (CVE-2026-33278)\n\nQifan Zhang discovered that Unbound incorrectly handled certain ghost\ndomain name records. A remote attacker could possibly use this issue to\ncause a denial of service. This issue only affected Ubuntu 24.04 LTS,\nUbuntu 25.10, and Ubuntu 26.04 LTS. (CVE-2026-40622)\n\nQifan Zhang discovered that Unbound did not properly limit processing of\nlong EDNS option lists. A remote attacker could possibly use this issue to\ncause Unbound to use excessive resources, leading to a denial of service.\n(CVE-2026-41292)\n\nQifan Zhang discovered that Unbound incorrectly handled jostle logic under\ncertain circumstances. A remote attacker could possibly use this issue to\ncause Unbound to use excessive resources, leading to a denial of service.\n(CVE-2026-42534)\n\nQifan Zhang discovered that Unbound did not properly bound NSEC3 hash\ncalculations. A remote attacker could possibly use this issue to cause\nUnbound to use excessive resources, leading to a denial of service.\n(CVE-2026-42923)\n\nQifan Zhang discovered that Unbound incorrectly handled multiple EDNS\noptions in certain situations. A remote attacker could possibly use this\nissue to cause Unbound to crash, resulting in a denial of service, or\nexecute arbitrary code. This issue only affected Ubuntu 24.04 LTS,\nUbuntu 25.10, and Ubuntu 26.04 LTS. (CVE-2026-42944)\n\nQifan Zhang discovered that Unbound incorrectly handled DNSSEC validation\nof malicious content. A remote attacker could possibly use this issue to\ncause Unbound to crash, resulting in a denial of service.\n(CVE-2026-42959)\n\nTaoFei Guo, Yang Luo, and JianJun Chen discovered that Unbound\nincorrectly handled delegation processing in certain situations. A remote\nattacker could possibly use this issue to poison the DNS cache and obtain\nsensitive information. (CVE-2026-42960)\n\nQifan Zhang discovered that Unbound did not properly bound name\ncompression in certain cases. A remote attacker could possibly use this\nissue to cause Unbound to use excessive resources, leading to a denial of\nservice. (CVE-2026-44390)\n\nQifan Zhang discovered that Unbound had a use-after-free issue in RPZ\nhandling. A remote attacker could possibly use this issue to cause Unbound\nto crash, resulting in a denial of service, or execute arbitrary code.\nThis issue only affected Ubuntu 24.04 LTS, Ubuntu 25.10, and Ubuntu 26.04\nLTS. (CVE-2026-44608)","dates":{"published":"2026-05-20T12:20:50.000Z","modified":"2026-06-30T18:16:12.957Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"unbound","name":"unbound","label":"unbound","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/unbound","purlType":"deb","versions":[{"text":"< 1.13.1-1ubuntu5.15","noFixRecorded":false,"fixedIn":null},{"text":"< 1.19.2-1ubuntu3.8","noFixRecorded":false,"fixedIn":null},{"text":"< 1.22.0-2ubuntu2.3","noFixRecorded":false,"fixedIn":null},{"text":"< 1.24.2-1ubuntu2.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.13.1-1ubuntu5.15 | < 1.19.2-1ubuntu3.8 | < 1.22.0-2ubuntu2.3 | < 1.24.2-1ubuntu2.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-8282-1","label":"ubuntu.com/security/notices/USN-8282-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-32792","label":"ubuntu.com/security/CVE-2026-32792","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-33278","label":"ubuntu.com/security/CVE-2026-33278","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-40622","label":"ubuntu.com/security/CVE-2026-40622","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-41292","label":"ubuntu.com/security/CVE-2026-41292","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-42534","label":"ubuntu.com/security/CVE-2026-42534","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-42923","label":"ubuntu.com/security/CVE-2026-42923","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-42944","label":"ubuntu.com/security/CVE-2026-42944","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-42959","label":"ubuntu.com/security/CVE-2026-42959","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-42960","label":"ubuntu.com/security/CVE-2026-42960","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-44390","label":"ubuntu.com/security/CVE-2026-44390","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-44608","label":"ubuntu.com/security/CVE-2026-44608","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CVE-2026-32792","CVE-2026-33278","CVE-2026-40622","CVE-2026-41292","CVE-2026-42534","CVE-2026-42923","CVE-2026-42944","CVE-2026-42959","CVE-2026-42960","CVE-2026-44390","CVE-2026-44608"]},"timeline":[{"kind":"published","date":"2026-05-20T12:20:50.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-30T18:16:12.957Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T22:18:16.218Z","stale":false,"partial":false}}