Security Advisory

CVE-2026-3593

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-20 13:09:47

Last updated 2026-07-15 01:02:38

Assigner isc

CVSS score 7.4

State PUBLISHED

Description

A use-after-free vulnerability exists within the DNS-over-HTTPS implementation. This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1. BIND 9 versions 9.18.0 through 9.18.48 and 9.18.11-S1 through 9.18.48-S1 are NOT affected.

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