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CVE-2026-3593

HIGH CVSS: 7.4 Published: 2026-05-20 Modified: 2026-07-24

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.

Affected Platforms

Isc Bind

Weakness Type

CWE-416, CWE-825

References