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CVE-2025-8677 is a denial-of-service vulnerability in BIND 9’s DNSSEC validation logic. When a recursive resolver queries a specially crafted DNSSEC-signed zone containing malformed DNSKEY records, particularly malformed ECDSA DNSKEY material, BIND can perform excessive cryptographic processing while continuing to evaluate invalid keys instead of failing validation efficiently. The malformed records can trigger repeated elliptic-curve point reconstruction and associated error handling and logging, leading to disproportionate CPU consumption. The issue affects recursive BIND 9 resolvers with DNSSEC validation enabled in 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. Authoritative-only deployments are not affected.
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No public exploit code observed for this vulnerability.
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33 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A separate BIND-related vulnerability referenced for comparison; it affects select_signing_key() and is explicitly stated to be different from the issue under discussion.
A previously fixed BIND-related vulnerability referenced here because its remediation introduced or exposed a DNSSEC validation regression when unsupported and supported signature algorithms are mixed.
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).
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.