PT-2026-52381 · Powerdns · Dnsdist

Qifan Zhang · Publicado 2026-06-25 · Atualizado 2026-06-25 · CVE-2026-40209

Mitre

CVSS v3.1

5.3

Média

Vetor base

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

Correção

Identificadores relacionados

CVE-2026-40209

Produtos afetados

Dnsdist

Referências · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-40209 · Nota de Segurança
• https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-09.html · Nota