Unnecessary validation of DNSSEC signed records

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AZL-93123 CVE-2026-13321 affecting package bind for versions less than 9.20.26-1

The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1...

CVE-2026-56416

In NLnet Labs Unbound up to and including version 1.25.1, when the validator builds the canonical RDATA form for an RRSIG-covered PX/RP/MINFO/SOA RRset, it computes the address of the second embedded domain name as 'datstart + dnamevaliddatstart, ...' and passes it straight to 'querydnametolower'...

EUVD-2026-47713

The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1...

unbound: Unbound: Heap buffer overflow via malformed DNSSEC record

A vulnerability in Unbound allows remote attackers using malicious DNSSEC-signed servers to send malformed records that trigger a heap buffer overflow. This can cause a denial of service or potential limited information disclosure...

openSUSE Security Update : bind (openSUSE-2015-600)

BIND was updated to fix a denial of service against servers performing validation on DNSSEC-signed records CVE-2015-5722, bsc944066. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were extracted from openSUSE Security Update...