CVE-2026-19668

Details

A BIND recursive resolver may experience excessive resource consumption if it encounters large numbers of a particular kind of invalid DNSSEC record. Default limits on "max-records-per-type" and "max-types-per-name" help mitigate the exposure. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

Affected Packages

bind

brew

References

FIX

https://downloads.isc.org/isc/bind9/9.20.29

FIX

https://downloads.isc.org/isc/bind9/9.21.26

ADVISORY

https://kb.isc.org/docs/cve-2026-19668

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-19668