As of October 21, 2026, ISC is affected by a vulnerability in the following products:
BIND 9 Versions 9.11.0 to 9.18.50 Versions 9.11.0 to 9.18.50 ◦ Versions 9.21.0 to 9.21.26
Versions 9.11.0 to 9.18.50
Versions 9.11.0 to 9.18.50
◦ Versions 9.21.0 to 9.21.26
BIND Supported Preview Edition Versions 9.11.3-S1 to 9.18.50-S1 Versions 9.20.9-S1 to 9.20.29-S1
Versions 9.11.3-S1 to 9.18.50-S1
Versions 9.20.9-S1 to 9.20.29-S1
The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available.
CVE-2026-19630: Amplified resource exhaustion in inbound message processing
CVE-2026-94300: Concurrent GSS-TSIG messages corrupt memory
CVE-2026-96888: named may terminate unexpectedly when a redirect zone is used with strict QNAME minimization
CVE-2026-97313: Specific RPZ configurations and query patterns may result in an unexpected exit
BIND 9 Security Vulnerability Matrix
The full story
This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.
