ISC BIND security advisory (AV26-931)
Canadian Cyber Centre relays ISC advisory on vulnerabilities affecting multiple BIND 9 branches; administrators should review the matrix and apply updates.
On September 16, 2026, the Canadian Centre for Cyber Security (AV26-931) relayed ISC's advisory on vulnerabilities affecting ISC BIND 9 versions prior to or equal to 9.18.50, 9.20.27, and 9.21.25, including their -S1 variants. No specific CVE identifiers or exploitation details are provided in the bulletin. Administrators are directed to ISC's BIND 9 Software Vulnerability Matrix and encouraged to apply updates as they become available.
- Affects BIND 9 branches up to 9.18.50, 9.20.27, and 9.21.25, including stable variants.
- CCCS urges administrators to consult ISC's vulnerability matrix and patch promptly.
- No exploitation or specific CVE details are given in the relayed bulletin.
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Serial Number: AV26-931
Date: September 16, 2026
As of September 16, 2026, ISC is affected by vulnerabilities in the following product:
- ISC BIND 9
- Prior to or equal to 9.18.50
- Prior to or equal to 9.18.50-S1
- Prior to or equal to 9.20.27
- Prior to or equal to 9.20.27-S1
- Prior to or equal to 9.21.25
The Cyber Centre encourages users and administrators to review the provided web link and apply any necessary updates as they become available.
Text extracted automatically; images, tables and formatting may be missing. Original: https://cyber.gc.ca/en/alerts-advisories/isc-bind-security-advisory-av26-931