{"schemaVersion":3,"id":"USN-8474-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"NSD vulnerabilities\n\nIt was discovered that NSD incorrectly handled APL resource records with an\naddress length larger than permitted for the address family. A remote attacker\ncould use this to cause a stack-based buffer overflow when the zone is written\nto disk, potentially executing arbitrary code with the privileges of the NSD\nserver. (CVE-2026-12246)\n\nIt was discovered that NSD incorrectly handled SVCB resource records. A remote\nattacker could use this to cause a heap overflow, potentially executing\narbitrary code with the privileges of the NSD server. This issue only affected\nUbuntu 26.04 LTS. (CVE-2026-12244)\n\nIt was discovered that NSD had a use-after-free vulnerability in TLS\nconnection error logging. A remote attacker could use this to cause a denial\nof service by crashing the server process. This issue only affected Ubuntu\n26.04 LTS. (CVE-2026-12245)\n\nIt was discovered that NSD incorrectly handled TLS authentication for zone\ntransfers. An attacker could bypass transfer security restrictions when\ncertain conditions were met. This issue only affected Ubuntu 26.04 LTS.\n(CVE-2026-12490)","dates":{"published":"2026-06-25T12:38:18.000Z","modified":"2026-06-29T13:51:19.578Z","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":"nsd","name":"nsd","label":"nsd","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/nsd","purlType":"deb","versions":[{"text":"< 4.1.7-1ubuntu0.1~esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 4.1.17-1ubuntu0.1~esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 4.1.26-1ubuntu0.1~esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 4.3.9-1ubuntu0.1~esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 4.8.0-1ubuntu0.1~esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 4.14.0-1ubuntu0.1~esm1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.1.7-1ubuntu0.1~esm1 | < 4.1.17-1ubuntu0.1~esm1 | < 4.1.26-1ubuntu0.1~esm1 | < 4.3.9-1ubuntu0.1~esm1 | < 4.8.0-1ubuntu0.1~esm1 | < 4.14.0-1ubuntu0.1~esm1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-8474-1","label":"ubuntu.com/security/notices/USN-8474-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-12244","label":"ubuntu.com/security/CVE-2026-12244","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-12245","label":"ubuntu.com/security/CVE-2026-12245","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-12246","label":"ubuntu.com/security/CVE-2026-12246","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-12490","label":"ubuntu.com/security/CVE-2026-12490","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CVE-2026-12244","CVE-2026-12245","CVE-2026-12246","CVE-2026-12490"]},"timeline":[{"kind":"published","date":"2026-06-25T12:38:18.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-29T13:51:19.578Z","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":"2026-10-19T22:49:43.967Z","stale":false,"partial":false}}