New BIND releases are available: 9.18.41, 9.20.15, 9.21.14

[Suzanne Goldlust]

Our October 2025 maintenance releases of BIND 9 are available and can be downloaded from the ISC software download page, https://www.isc.org/download. Packages and container images provided by ISC will be updated later today.

In addition to bug fixes and feature improvements, these releases also contain fixes for security vulnerabilities (CVE-2025-8677, CVE-2025-40778, CVE-2025-40780), about which more information is provided in the following Security Advisories:

    https://kb.isc.org/docs/cve-2025-8677
    https://kb.isc.org/docs/cve-2025-40778
    https://kb.isc.org/docs/cve-2025-40780

A summary of significant changes in the new releases can be found in their release notes:

  - Current supported stable branches:

    9.18.41 - https://downloads.isc.org/isc/bind9/9.18.41/doc/arm/html/notes.html
    9.20.15 - https://downloads.isc.org/isc/bind9/9.20.15/doc/arm/html/notes.html

  - Experimental development branch:

    9.21.14 - https://downloads.isc.org/isc/bind9/9.21.14/doc/arm/html/notes.html

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As a reminder, BIND’s supported platforms are listed in the ARM (https://bind9.readthedocs.io/en/stable/chapter2.html#supported-platforms) and in this knowledgebase article (https://kb.isc.org/docs/supported-platforms).