CVE-2026-11331

7.5 Élevée

Publiée le 22/07/2026 à 17:16 · Modifiée le 22/07/2026 à 22:33 · Analyse NVD en cours · Source : security-officer@isc.org

Description

An attacker who knows (or guesses) that a resolver uses RPZ with wildcard CNAME policies can craft query names long enough to trigger a NAMETOOLONG error condition during RPZ processing. This is not handled correctly and may lead to defeating the RPZ rule. It also may lead to an unexpected exit of the BIND 9 software. This issue affects BIND 9 versions 9.16.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.16.8-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.

Traduire en français

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:H/I:N/A:N`

Faiblesses (CWE)

CWE-790

Références

https://downloads.isc.org/isc/bind9/9.20.26
https://downloads.isc.org/isc/bind9/9.21.24
https://kb.isc.org/docs/cve-2026-11331

Ailleurs

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