New BIND 9 releases: 9.20.30, 9.21.27

New BIND 9 releases: 9.20.30, 9.21.27

Our October 2026 maintenance releases of BIND 9 are available and can be downloaded from the links below. 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. More information can be found in the following Security Advisories:

https://kb.isc.org/docs/cve-2026-19630
https://kb.isc.org/docs/cve-2026-94300
https://kb.isc.org/docs/cve-2026-96888
https://kb.isc.org/docs/cve-2026-97313

A link to each newly-released version follows. Each release directory includes a complete source tarball, cryptographic signature, and release notes. The release notes provide a summary of significant changes, and should be reviewed before upgrading.

– Current supported stable branch:

– 9.20.30 – https://downloads.isc.org/isc/bind9/9.20.30/

– Experimental development branch:

– 9.21.27 – https://downloads.isc.org/isc/bind9/9.21.27/

For more information and other release formats, consult the ISC software download page: https://www.isc.org/download/

Thank you for using ISC’s software.

If you use BIND software from vendor or distribution downstream from ISC's BIND, that software may be impacted, and expect that most will have security and/or other updates out soon, if they're not already released.