CVE-2025-40776

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.

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.

Un solucionador de caché con nombre configurado para enviar opciones de ECS (subred de cliente EDNS) podría ser vulnerable a un ataque de envenenamiento de caché. Este problema afecta a las versiones de BIND 9 de la 9.11.3-S1 a la 9.16.50-S1, de la 9.18.11-S1 a la 9.18.37-S1 y de la 9.20.9-S1 a la 9.20.10-S1.