CVE-2026-40209

5.3 Moyenne

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 might be able to cause outgoing TCP connections to backend to be stuck until a timeout occurs instead of being released immediately, by sending IXFR queries. This could be used to cause a denial of service if there is a limit to the number of concurrent connections to this backend, or if the process runs out of file descriptors.

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Produits concernés

PowerDNS DNSdist

Scores CVSS

Version	Score	Source	Vecteur
3.1	5.3 Moyenne	security@open-xchange.com	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`

Faiblesses (CWE)

CWE-772

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