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Vulnerabilities of ISC BIND 9

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CVE Summary Score Published
CVE-2026-97313 A recursive BIND server that receives a query with recursion desired (RD=1) followed by a non-recursive query (RD=0) may… 7.5 High Oct 21, 2026
CVE-2026-96888 A BIND resolver that is configured with both a "redirect" zone and "qname-minimization strict" may abort with an… 7.5 High Oct 21, 2026
CVE-2026-94300 Replaying GSS-TSIG signed UDP messages can result in memory corruption in "`named`" 8.1 High Oct 21, 2026
CVE-2026-19630 In a BIND resolver, inbound DNS protocol messages with a particular structure will result in additional processing, with… 7.5 High Oct 21, 2026
CVE-2026-77119 A validly signed NSEC3 from an unrelated sibling zone may be accepted as an insecurity proof, downgrading a secure… 5.9 Medium Sep 16, 2026
CVE-2026-75029 In a query response, an attacker may send `named` multiple copies of a record that should only exist once (such as an… 5.3 Medium Sep 16, 2026
CVE-2026-19668 A BIND recursive resolver may experience excessive resource consumption if it encounters large numbers of a particular… 5.3 Medium Sep 16, 2026
CVE-2026-19033 For a secondary zone with transfers restricted by TSIG, `named` may start to serve the data provided in a zone… 6.5 Medium Sep 16, 2026
CVE-2026-80274 If a BIND resolver sends a query for a DNSSEC-signed authoritative zone, and the authoritative server replies with a… 7.5 High Sep 16, 2026
CVE-2026-76163 If BIND is loaded with a "`named.conf`" file that contains no global "`options`" block, an attacker can send a query… 7.5 High Sep 16, 2026
CVE-2026-19666 On a resolver configured to use ``dns64``, if an applicable answer from the authoritative server is malformed in a… 7.5 High Sep 16, 2026
CVE-2026-81563 A BIND resolver encountering an SVCB/HTTPS AliasMode record referencing 14 or more SVCB/HTTPS ServiceMode records may… 7.5 High Sep 16, 2026
CVE-2026-78301 A malformed zone may contain an NS or DNAME node above its origin, which `named` treats as a zone cut 5.8 Medium Sep 16, 2026
CVE-2026-77692 An attacker can cause `named` to abort by sending a crafted DNS-over-HTTPS request with a cryptographically invalid… 7.5 High Sep 16, 2026
CVE-2026-19941 An inapplicable NSEC record may be accepted by a `named` resolver as proof that no wildcard exists, which could allow an… 5.9 Medium Sep 16, 2026
CVE-2026-19662 An attacker may be able to cause a `named` resolver to abort 5.9 Medium Sep 16, 2026
CVE-2026-19667 If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in… 7.5 High Sep 16, 2026
CVE-2026-81736 If a BIND resolver has cached a tree of SVCB/HTTPS AliasMode records, and is then queried for the root of that tree, the… 7.5 High Sep 16, 2026
CVE-2026-13321 The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's… 8.6 High Jul 22, 2026
CVE-2026-13204 If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for… 7.5 High Jul 22, 2026
CVE-2026-12617 The issue is unexpected program termination based on ordering and/or specific content in responses to queries for… 7.5 High Jul 22, 2026
CVE-2026-11721 It is possible for an attacker's zone to respond to a query with an RRSIG that has a smaller number of labels than the… 7.5 High Jul 22, 2026
CVE-2026-11622 A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from… 7.5 High Jul 22, 2026
CVE-2026-11605 The issue is a resource exhaustion vulnerability associated with DNSSEC validation 7.5 High Jul 22, 2026
CVE-2026-11331 An attacker who knows (or guesses) that a resolver uses RPZ with wildcard CNAME policies can craft query names long… 7.5 High Jul 22, 2026

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