CVE-2026-19666 — Use-after-free in query_addnoqnameproof() via the DNS64 filter64 path
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 unexpecte…
Published: 2026-09-16 · CVSS: 7.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7