bind9: bind: BIND 9: DNS wildcard record existence can be masked by an attacker via inapplicable NSEC records

A flaw was found in BIND 9. A remote attacker could exploit this by providing an inapplicable NSEC Next Secure record to a named resolver. This could allow the attacker to mask the existence of a victim's wildcard DNS Domain Name System record, potentially leading to a misrepresentation of DNS...

AZL-103359 CVE-2026-19941 affecting package bind 9.20.26-1

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...

DEBIAN-CVE-2026-19941

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...

CVE-2026-19941

BIND 9 's named resolver contains a flaw in its checkwildcard() function that may accept an inapplicable, out-of-zone NSEC record as proof that no wildcard exists. This allows an attacker positioned at the same or an upstream level of the zone name to mask the existence of a victim's wildcard rec...

CVE-2026-19941

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...

CVE-2026-19941 checkwildcard() accepts an out-of-zone NSEC as a wildcard-nonexistence proof

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...

CVE-2026-19941 checkwildcard() accepts an out-of-zone NSEC as a wildcard-nonexistence proof

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...

EUVD-2026-80745

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...

Linux Distros Unpatched Vulnerability : CVE-2026-19941

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...