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CVE-2025-40776

HIGH CVSS: 8.6 Published: 2025-07-16 Modified: 2026-06-17

Description

A `named` caching resolver that is configured to send ECS (EDNS Client Subnet) options may be vulnerable to a cache-poisoning attack. This issue affects BIND 9 versions 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.37-S1, and 9.20.9-S1 through 9.20.10-S1.

Affected Platforms

Unknown

Weakness Type

CWE-349

References