bind security

  1. CVE-2026-5947 BIND SIG(0) Race Condition: Patch to Prevent DNS Outages

    On May 20, 2026, Internet Systems Consortium disclosed CVE-2026-5947, a high-severity BIND 9 flaw in which SIG(0)-signed DNS traffic arriving during a query flood can trigger a race condition, use freed memory, and crash DNS service. The bug is not a flashy remote-code-execution headline, but...
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    • bind security dns availability sig(0) validation windows dns dependency
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