unbound resolver

  1. Unbound CVE-2026-42923: DNSSEC NSEC3 Hash Loops Can Degrade Resolver Availability

    Microsoft has listed CVE-2026-42923, disclosed on May 20, 2026, as a degradation-of-service flaw in NLnet Labs Unbound, where vulnerable DNSSEC validation can spend excessive time on NSEC3 hash calculations and intermittently reduce resolver availability under attacker-controlled conditions. The...
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