CVE-2026-3592

MEDIUM5.3

Amplification vulnerabilities via self-pointed glue records

Published May 20, 2026

Modified 2 days ago

Details

BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack. If a victim resolver makes a query to a specially crafted zone, the resolver will consume disproportionate resources. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.

References

FIX

https://downloads.isc.org/isc/bind9/9.18.49

FIX

https://downloads.isc.org/isc/bind9/9.20.23

FIX

https://downloads.isc.org/isc/bind9/9.21.22

ADVISORY

https://kb.isc.org/docs/cve-2026-3592

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-3592

CVSS Analysis