On 16 September 2026, Internet Systems Consortium disclosed fourteen vulnerabilities affecting our BIND 9 software:
- CVE-2026-19033: Unauthenticated IXFR deltas are applied to the live zone before TSIG verification https://kb.isc.org/docs/cve-2026-19033 - CVE-2026-19662: qpcache NOQNAME proof use-after-free crashes recursive resolver https://kb.isc.org/docs/cve-2026-19662 - CVE-2026-19666: Use-after-free in query_addnoqnameproof() via the DNS64 filter64 path https://kb.isc.org/docs/cve-2026-19666 - CVE-2026-19667: Remote assertion failure via 16-bit length truncation in `dns_ncache_add()` https://kb.isc.org/docs/cve-2026-19667 - CVE-2026-19668: Resource Exhaustion via Excessive DNSSEC Cryptographic Material Matching https://kb.isc.org/docs/cve-2026-19668 - CVE-2026-19941: checkwildcard() accepts an out-of-zone NSEC as a wildcard-nonexistence proof https://kb.isc.org/docs/cve-2026-19941 - CVE-2026-75029: Message parser retains every identical singleton RDATA, enabling wire-to-work amplification https://kb.isc.org/docs/cve-2026-75029 - CVE-2026-76163: named aborts on a TKEY query when the user configuration has no global options statement https://kb.isc.org/docs/cve-2026-76163 - CVE-2026-77119: NSEC3 insecure-referral proof can use unrelated cached NSEC3 RRsets https://kb.isc.org/docs/cve-2026-77119 - CVE-2026-77692: Unauthenticated remote crash of named via a single DoH SIG(0) request https://kb.isc.org/docs/cve-2026-77692 - CVE-2026-78301: Out-of-zone database nodes can become authoritative zone cuts https://kb.isc.org/docs/cve-2026-78301 - CVE-2026-80274: Validating resolver can abort while caching a mismatched NOQNAME proof https://kb.isc.org/docs/cve-2026-80274 - CVE-2026-81563: SVCB AliasMode additional-data error leaks qpcache references https://kb.isc.org/docs/cve-2026-81563 - CVE-2026-81736: Remote CPU denial of service through cached SVCB/HTTPS AliasMode trees https://kb.isc.org/docs/cve-2026-81736 New versions of BIND 9 are available: - https://downloads.isc.org/isc/bind9/9.20.29/ - https://downloads.isc.org/isc/bind9/9.21.26/ For more information and other release formats, consult the ISC software download page: https://www.isc.org/download/ With the public announcement of these vulnerabilities, the embargo period is ended and any updated software packages that have been prepared may be released. -- Nicki Křížek
OpenPGP_0x01623B9B652A20A7.asc
Description: OpenPGP public key
OpenPGP_signature.asc
Description: OpenPGP digital signature
