CVE-2026-19941

Published: Sep 16, 2026Modified: Sep 17, 2026

5.9

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitability: 2.2 / Impact: 3.6

Source: security-officer@isc.org (Secondary)

Description

An inapplicable NSEC record may be accepted by a `named` resolver as proof that no wildcard exists, which could allow an attacker at the same or an upstream level of the zone name to mask the existence of a victim's wildcard record. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

Related CWEs

CWE-345

Insufficient Verification of Data Authenticity

The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

References (3)

https://downloads.isc.org/isc/bind9/9.20.29

Source: security-officer@isc.org

https://downloads.isc.org/isc/bind9/9.21.26

Source: security-officer@isc.org

https://kb.isc.org/docs/cve-2026-19941

Source: security-officer@isc.org

Timeline

No history available yet.