BIND 9 DNSSEC malformed DNSKEY CPU exhaustion DoS
CVE-2025-8677 is a remote resource-exhaustion vulnerability in BIND 9 affecting DNSSEC validation on recursive resolvers. When a vulnerable resolver queries records in a specially crafted DNS zone containing certain malformed DNSKEY records, the resolver can enter excessive CPU-consuming processing, leading to resource exhaustion. The issue affects BIND 9 versions 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1. The available content attributes the flaw to malformed DNSKEY handling in BIND’s DNSSEC validation logic. Authoritative-only BIND servers are not affected.
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Recent activity
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A vulnerability listed as trending; no technical details provided in the content.
A BIND 9 resource-exhaustion (CPU overload) vulnerability triggered by malformed DNSKEY handling, leading to denial of service against DNS resolvers (especially recursive resolvers).
A vulnerability in ISC BIND 9 affecting multiple versions, details unspecified in the content, but significant enough to warrant a security advisory and patch.
A remote CPU/resource exhaustion vulnerability in BIND 9 DNSSEC validation logic that can be triggered via specially crafted malformed DNSKEY records, causing recursive resolvers to become unresponsive or deny DNS resolution.
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Cross-references every affected SKU, including bundled OEM variants.
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