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CVE-2026-11622 is a high-severity denial-of-service vulnerability in BIND 9 affecting DNSSEC-validating resolver deployments. When a resolver is subjected to a random subdomain attack against a DNSSEC-signed zone, memory consumption can grow uncontrollably if the attacker can generate queries faster than the resolver can complete DNSSEC validation. Under these conditions, the resolver may allocate memory far in excess of the administrator-configured max-cache-size limit, resulting in runaway resource consumption. Affected versions include BIND 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
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No public exploit code observed for this vulnerability.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.