CVE-2026-42004

3.7 Faible

Publiée le 25/06/2026 à 15:16 · Modifiée le 25/06/2026 à 17:59 · Analyse NVD reportée · Source : security@open-xchange.com

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.

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Produits concernés

PowerDNS DNSdist

Scores CVSS

Version	Score	Source	Vecteur
3.1	3.7 Faible	security@open-xchange.com	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N`

Faiblesses (CWE)

CWE-115

Références

https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-09.html

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories