{"id":"CVE-2026-3104","title":"A specially crafted domain can be used to cause a memory leak in a BIND resolver simply by querying this domain.\nThis issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1.\nBIND 9 …","summary":"A specially crafted domain can be used to cause a memory leak in a BIND resolver simply by querying this domain.\nThis issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1.\nBIND 9 …","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-772","CWE-401","CWE-772"],"vendor":"isc","product":"bind","affected":["bind >= 9.20.0, < 9.20.21","bind >= 9.21.0, < 9.21.20"],"patched":["bind 9.21.20"],"published":"2026-03-25","updated":"2026-09-01","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-3104","references":[{"url":"https://downloads.isc.org/isc/bind9/9.20.21","label":"security-officer@isc.org"},{"url":"https://downloads.isc.org/isc/bind9/9.21.20","label":"security-officer@isc.org"},{"url":"https://kb.isc.org/docs/cve-2026-3104","label":"security-officer@isc.org"},{"url":"https://access.redhat.com/errata/RHSA-2026:6935","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/security/cve/CVE-2026-3104","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2451310","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3104.json","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}],"tags":["nvd"],"epss":0.00698,"epssPercentile":0.51277,"ingestedAt":"2026-09-01T13:27:08.183Z","slug":"CVE-2026-3104","body":"## Overview\n\nA specially crafted domain can be used to cause a memory leak in a BIND resolver simply by querying this domain.\nThis issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1.\nBIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.\n\n## Affected\n\n- `bind >= 9.20.0, < 9.20.21`\n- `bind >= 9.21.0, < 9.21.20`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `bind 9.21.20`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}