CVE-2011-4313: query.c in ISC BIND 9.0.x through 9.6.x, 9.4-ESV through 9.4-ESV-R5, 9.6-ESV through 9.6-ESV-R5, 9.7.0 thro...

Security readout for executives and security teams

This vulnerability can let a remote attacker crash an affected BIND DNS server. The business impact is DNS outage, not data theft. If the server provides recursive DNS for users or systems, disruption could break name resolution and dependent applications until named restarts or is patched. Exposure is most likely on legacy systems still running affected BIND 9.0.x through 9.9.0 beta-era releases, especially recursive resolvers. References show multiple operating-system vendors issued advisories, so packaged BIND deployments should be checked against vendor errata. Handle as a reliability and business-continuity issue. It is old, but DNS failures can have broad operational impact. Prioritize remediation if any internet-facing or widely used recursive resolver still runs affected legacy BIND versions. Mitigation focus: Inventory all BIND named instances and identify exact upstream or vendor package versions.; Apply relevant operating-system or ISC BIND vendor updates from trusted advisories.; Prioritize externally reachable or broadly accessible recursive DNS servers..

Prepared

Jun 27, 2026, 17:48 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.