ISC BIND security advisory (AV25-440)

Serial number: AV25-440
Date: July 21, 2025

On July 16, 2025, ISC published security advisories to address vulnerabilities in the following product:

• ISC BIND 9 – versions 9.11.3-S1 to 9.16.50-S1
• ISC BIND 9 – versions 9.18.11-S1 to 9.18.37-S1
• ISC BIND 9 – versions 9.20.9-S1 to 9.20.10-S1
• ISC BIND 9 – versions 9.20.0 to 9.20.10
• ISC BIND 9 – versions 9.21.0 to 9.21.9

The Cyber Centre encourages users and administrators to review the provided web links and apply the necessary updates.

• ISC BIND security advisory - CVE-2025-40776
• ISC BIND security advisory - CVE-2025-40777
• BIND 9 Security Vulnerability Matrix