AUGUST 4, 2026
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Case File

CVE-2025-40776

HIGH · CVSS 8.6 EPSS 0.20%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-07-16 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.6. See the original NVD description below for full technical details.

CVE
CVE-2025-40776
Severity
HIGH
CVSS
8.6
EPSS
0.20%

Original NVD 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.