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CVE-2026-42004

3.7 low SSVC exploitation: none Deferred
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 3.7NVD modified 2026-10-25 23:10

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 1