CVE-2026-78301

The record

A malformed zone may contain an NS or DNAME node above its origin, which `named` treats as a zone cut. If an attacker inserts a malformed zone into a BIND authoritative server (e.g., via zone transfer), queries for names inside the configured zone then lose authoritative status and return an out-of-zone delegation. On a server that also provides recursion BIND can follow this locally sourced cut and cache attacker-supplied data, affecting names outside the configured zone. This situation persists as long as the malformed zone remains in the zone database. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

Affected packages

Related vulnerabilities

• CVE-2026-19033 For a secondary zone with transfers restricted by TSIG, `named` may start to serve the… CWE-349
• CVE-2026-50252 In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized… CWE-349
• CVE-2026-41120 Dell Wyse Management Suite, versions prior to WMS 5.5 HF1, contain an Acceptance of… CWE-349
• CVE-2026-33612 A malicious authoritative server can send a crafted zone via the ZoneToCache function… CWE-349
• CVE-2026-46342 Nuxt is an open-source web development framework for Vue.js. CWE-349
• CVE-2026-45602 No cwe for this issue in Windows DHCP Server allows an unauthorized attacker to perform… CWE-349
• CVE-2026-42960 NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to poisoning via… CWE-349
• GHSA-g8wj-3cr3-6w7v Nuxt: `__nuxt_island` endpoint does not bind responses to request props, enabling… CWE-349