AUGUST 15, 2026
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Case File

CVE-2026-42004

LOW · CVSS 3.7 EPSS 0.16%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-06-25 · Last synced 2026-08-04

CyberRota Analysis

This is a low severity vulnerability with a CVSS score of 3.7. See the original NVD description below for full technical details.

CVE
CVE-2026-42004
Severity
LOW
CVSS
3.7
EPSS
0.16%

Original NVD Description

An attacker can send a crafted EDNS OPT record that will be ignored by DNSdist’s filtering rules, but will be rewritten as a valid OPT record when EDNS Client Subnet is inserted, causing the backend to see the EDNS option(s) that DNSdist did not filter.