{"id":"CVE-2026-3039","details":"BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets.  Typically these servers will be found in Active Directory integrated DNS deployments and/or Kerberos-secured DNS environments.\nThis issue affects BIND 9 versions 9.0.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.9.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.","modified":"2026-07-08T08:12:45.567462007Z","published":"2026-05-20T13:16:23.647Z","related":["ALSA-2026:23360","ALSA-2026:24338","ALSA-2026:24339","ALSA-2026:24367","ALSA-2026:24368","SUSE-SU-2026:22198-1","SUSE-SU-2026:2289-1","SUSE-SU-2026:2616-1","SUSE-SU-2026:2617-1","SUSE-SU-2026:2673-1","SUSE-SU-2026:2676-1","SUSE-SU-2026:2779-1","openSUSE-SU-2026:10874-1","openSUSE-SU-2026:21123-1"],"database_specific":{},"references":[{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-3039"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3039.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:20334"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:23360"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24338"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24339"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24367"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24368"},{"type":"ADVISORY","url":"https://kb.isc.org/docs/cve-2026-3039"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479767"},{"type":"FIX","url":"https://downloads.isc.org/isc/bind9/9.18.49"},{"type":"FIX","url":"https://downloads.isc.org/isc/bind9/9.20.23"},{"type":"FIX","url":"https://downloads.isc.org/isc/bind9/9.21.22"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/isc-projects/bind9","events":[{"introduced":"19d6c56085e97cf4ac559cdc27edd624127bcb32"},{"last_affected":"acf2ba4a9337bced7e666b0460db4f58a4611eb8"},{"introduced":"8db45afa1affcb823e68afdeddedf93e136f5d3e"},{"fixed":"cd4a53b4630ba8646b2071ea8161d578b4185a94"},{"introduced":"14bbdfc7b9db0870a0b8941ca8812d9983fdba1a"},{"fixed":"7d0b4d4d436e7b950225a533e5bc56d8f935cc1c"},{"introduced":"b732da695eecc0526950e2c722cde0bf23e5a070"},{"fixed":"02a7b2c8a549b79cf885d1a0cda28b74de22d197"}],"database_specific":{"extracted_events":[{"introduced":"9.0.0"},{"last_affected":"9.16.50"},{"introduced":"9.18.0"},{"fixed":"9.18.49"},{"introduced":"9.20.0"},{"fixed":"9.20.23"},{"introduced":"9.21.0"},{"fixed":"9.21.22"}],"cpe":"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*","source":"CPE_RANGE"}}],"versions":["v9.18.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3039.json"}},{"ranges":[{"type":"GIT","repo":"https://gitlab.isc.org/isc-projects/bind9","events":[{"introduced":"19d6c56085e97cf4ac559cdc27edd624127bcb32"},{"last_affected":"acf2ba4a9337bced7e666b0460db4f58a4611eb8"},{"introduced":"8db45afa1affcb823e68afdeddedf93e136f5d3e"},{"fixed":"cd4a53b4630ba8646b2071ea8161d578b4185a94"},{"introduced":"14bbdfc7b9db0870a0b8941ca8812d9983fdba1a"},{"fixed":"7d0b4d4d436e7b950225a533e5bc56d8f935cc1c"},{"introduced":"b732da695eecc0526950e2c722cde0bf23e5a070"},{"fixed":"02a7b2c8a549b79cf885d1a0cda28b74de22d197"}],"database_specific":{"extracted_events":[{"introduced":"9.0.0"},{"last_affected":"9.16.50"},{"introduced":"9.18.0"},{"fixed":"9.18.49"},{"introduced":"9.20.0"},{"fixed":"9.20.23"},{"introduced":"9.21.0"},{"fixed":"9.21.22"}],"cpe":"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*","source":"CPE_RANGE"}}],"versions":["v9.18.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3039.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}