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CVE-2026-19668 is a medium-severity denial-of-service vulnerability in BIND 9 recursive resolvers. When processing large numbers of a particular type of invalid DNSSEC record, the resolver can perform excessive cryptographic-material matching and consume disproportionate resources. Default limits for max-records-per-type and max-types-per-name reduce exposure.
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No public exploit code observed for this vulnerability.
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5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A resource-consumption denial-of-service vulnerability in BIND recursive resolvers, triggered by large numbers of a particular invalid DNSSEC record type.
A remotely exploitable medium-severity resource-exhaustion vulnerability in BIND 9 recursive resolvers. Processing large numbers of a particular invalid DNSSEC record type can consume excessive CPU resources, causing packet loss.
An unpatched vulnerability tracked as CVE-2026-19668 affecting Debian Linux releases 12.0, 13.0, and 14.0, with BIND9 identified in the affected package context. The provided CVSS v3 vector indicates network reachability, low attack complexity, no privileges or user interaction required, and low availability impact.
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.