CVE-2026-19630

7.5 Élevée

Publiée le 21/10/2026 à 15:18 · Modifiée le 21/10/2026 à 20:17 · Reçue · Source : security-officer@isc.org

Description

In a BIND resolver, inbound DNS protocol messages with a particular structure will result in additional processing, with no limit imposed by BIND. A DNS message with a maliciously large number of such structures will cause BIND to consume disproportionate amounts of CPU time and memory during processing. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.

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Produits concernés

ISC BIND 9

Scores CVSS

Version	Score	Source	Vecteur
3.1	7.5 Élevée	security-officer@isc.org	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`

Faiblesses (CWE)

CWE-407

Références

https://downloads.isc.org/isc/bind9/9.20.30
https://downloads.isc.org/isc/bind9/9.21.27
https://kb.isc.org/docs/cve-2026-19630

Ailleurs

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