Name: CVE-2025-40776: Acceptance of Extraneous Untrusted Data With Trusted Data
Creator: Rapid7
Published: 2025-07-16T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2025-40776, CVSS 8.6, EPSS 0.00228

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.

CVSS Details

CVSS 3.1 Base Score: 8.6
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alpine Linux	—	Upgrade bind	Aug 8, 2025	Jul 16, 2025
Dns Bind	—	Upgrade ISC BIND to latest version	Feb 20, 2026	Feb 20, 2026

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CVSS Details

Covered by Rapid7

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