bind 9

  1. CVE-2026-3593 DoH in BIND 9: Patch Urgently or Disable DNS-over-HTTPS

    CVE-2026-3593 is a high-severity heap use-after-free vulnerability disclosed on May 20, 2026, in the DNS-over-HTTPS implementation of BIND 9, affecting BIND 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and the supported preview 9.20.9-S1 through 9.20.22-S1. ISC says crafted HTTP/2 traffic...
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    • bind 9 cve-2026-3593 dns over https vulnerability management
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    • Forum: Security Alerts

  2. CVE-2024-4076: Patch BIND 9 DNS to Prevent Remote Assertion Crash

    A logic bug in widely deployed BIND 9 resolvers—tracked as CVE-2024-4076—can cause named to hit an assertion and terminate when a single client query simultaneously triggers serving stale cache data and requires lookups in local authoritative zone content, creating a remotely exploitable...
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    • bind 9 cve 2024 4076 dns security remediation patching
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    • Forum: Security Alerts

  3. Urgent Patch BIND 9 CVE-2024-1737 and Enable RRset Limits

    Resolver operators and DNS administrators should treat CVE‑2024‑1737 as an urgent operational risk: a BIND 9 flaw that can slow or stall resolver caches and authoritative zone databases when large numbers of resource records (RRs) are concentrated at a single owner name, and ISC has published...
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    • bind 9 cve 2024 1737 dns security rrset limits
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    • Forum: Security Alerts

  4. Understanding CVE-2024-0760: Mitigating TCP DNS Floods in BIND 9

    A remotely exploitable flaw in BIND 9 allows a malicious client to flood a server with DNS messages over TCP and drive the process into an unstable, unavailable state — an availability-impacting denial-of-service that can leave resolvers and authoritative servers unresponsive while the attack...