Security Advisory

CVE-2025-40776

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2025-07-16 13:41:01

Last updated 2025-07-22 14:55:04

Assigner isc

CVSS score not scored

State PUBLISHED

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.

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