{"id":"CVE-2019-6469","aliases":["BELL-CVE-2019-6469","EUVD-2019-16029","GHSA-qxvj-gg4r-8gwm"],"status":"published","title":"BIND Supported Preview Edition can exit with an assertion failure if ECS is in use","description":"An error in the EDNS Client Subnet (ECS) feature for recursive resolvers can cause BIND to exit with an assertion failure when processing a response that has malformed RRSIGs. Versions affected: BIND 9.10.5-S1 -\u003e 9.11.6-S1 of BIND 9 Supported Preview Edition.","severity":{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.01954,"percentile":0.80399,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-617"],"published":"2019-10-09T14:17:14Z","modified":"2026-10-26T10:45:06Z","products":[{"vendor":"isc","product":"bind"},{"vendor":"isc","product":"bind 9 supported preview edition"}],"references":[{"url":"https://kb.isc.org/docs/cve-2019-6469","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory"]},{"url":"https://support.f5.com/csp/article/K39751401?utm_source=f5support\u0026amp%3Butm_medium=RSS","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-6469"},{"url":"https://support.f5.com/csp/article/K39751401?utm_source=f5support\u0026amp;utm_medium=RSS"},{"url":"https://github.com/advisories/GHSA-qxvj-gg4r-8gwm"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2019-6469","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2019-6469","title":"BIND Supported Preview Edition can exit with an assertion failure if ECS is in use","description":"An error in the EDNS Client Subnet (ECS) feature for recursive resolvers can cause BIND to exit with an assertion failure when processing a response that has malformed RRSIGs. Versions affected: BIND 9.10.5-S1 -\u003e 9.11.6-S1 of BIND 9 Supported Preview Edition.","status":"published","published":"2019-10-09T14:17:14.528Z","modified":"2024-09-17T01:30:59.645Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:20:23.381621Z"}],"euvd":[{"id":"EUVD-2019-16029","description":"An error in the EDNS Client Subnet (ECS) feature for recursive resolvers can cause BIND to exit with an assertion failure when processing a response that has malformed RRSIGs. Versions affected: BIND 9.10.5-S1 -\u003e 9.11.6-S1 of BIND 9 Supported Preview Edition.","status":"published","published":"2019-10-09T14:17:14Z","modified":"2024-09-17T01:30:59Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:28:48.901339Z"}],"ghsa":[{"id":"GHSA-qxvj-gg4r-8gwm","title":"An error in the EDNS Client Subnet (ECS) feature for recursive resolvers can cause BIND to exit...","description":"An error in the EDNS Client Subnet (ECS) feature for recursive resolvers can cause BIND to exit with an assertion failure when processing a response that has malformed RRSIGs. Versions affected: BIND 9.10.5-S1 -\u003e 9.11.6-S1 of BIND 9 Supported Preview Edition.","status":"published","published":"2022-05-24T16:58:22Z","modified":"2024-04-04T02:15:09Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:56:07.143453Z"}],"nvd":[{"id":"CVE-2019-6469","description":"An error in the EDNS Client Subnet (ECS) feature for recursive resolvers can cause BIND to exit with an assertion failure when processing a response that has malformed RRSIGs. Versions affected: BIND 9.10.5-S1 -\u003e 9.11.6-S1 of BIND 9 Supported Preview Edition.","status":"published","published":"2019-10-09T16:15:17.077Z","modified":"2026-06-17T02:39:05.923Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:05:31.019577Z"}],"osv":[{"id":"BELL-CVE-2019-6469","title":"CVE-2019-6469 does not affect BellSoft software","status":"withdrawn","published":"2019-10-09T16:15:00Z","modified":"2026-01-26T09:49:05.756582Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:15.340685Z"},{"id":"CVE-2019-6469","description":"An error in the EDNS Client Subnet (ECS) feature for recursive resolvers can cause BIND to exit with an assertion failure when processing a response that has malformed RRSIGs. Versions affected: BIND 9.10.5-S1 -\u003e 9.11.6-S1 of BIND 9 Supported Preview Edition.","status":"published","published":"2019-10-09T16:15:17.077Z","modified":"2026-10-26T10:45:06.450420069Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:12.675558Z"}]}}