Bypass of a configured island trust anchor underneath an insecure parent from an attacker-controlled NSEC record. Possible insecure NXDOMAIN for non-existing records under a configured island trust anchor underneath an insecure parent. Aggregate DNS name chained pointer decompression work leads to degradation of service. DNS-over-QUIC path-migration can lead to use-after-free on multi-threaded deployments. Possible cache poisoning vulnerability via a cache side-channel exposed by 'unwanted-reply-threshold'.