CVE-2019-6468: ISC BIND

High severity, CVSS 7.5. EPSS: 2.6% chance of exploitation in the next 30 days.

In BIND Supported Preview Edition, an error in the nxdomain-redirect feature can occur in versions which support EDNS Client Subnet (ECS) features. In those versions which have ECS support, enabling nxdomain-redirect is likely to lead to BIND exiting due to assertion failure. Versions affected: BIND Supported Preview Edition version 9.10.5-S1 -> 9.11.5-S5. ONLY BIND Supported Preview Edition releases are affected.

Affected products

• ISC BIND: version 9.10.5 only; version 9.11.5 only

Published 2019-10-09. Last modified 2026-06-17.