CVE-2026-19666

The record

On a resolver configured to use ``dns64``, if an applicable answer from the authoritative server is malformed in a specific way, the resolver `named` process will exit unexpectedly. 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-2026-19662 An attacker may be able to cause a `named` resolver to abort. CWE-416
• CVE-2026-78227 NLnet Labs Unbound 1.22.0 up to and including 1.26.1, has a use-after-free vulnerability… CWE-416
• CVE-2026-80229 When performing transfers via libcurl’s multi interface, pooled TLS connections can… CWE-416
• CVE-2026-33630 c-ares is an asynchronous resolver library. CWE-416
• CVE-2026-59184 OpenEXR is the reference implementation and specification for the EXR image format… CWE-416
• CVE-2026-18299 GStreamer rtpsbcdepay Use-After-Free Remote Code Execution Vulnerability. CWE-416
• CVE-2026-76957 libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. CWE-416
• CVE-2026-19548 Multiple Use-After-Free vulnerabilities were found in the add_archive_element function in… CWE-416