CVE-2026-19668

A BIND recursive resolver may experience excessive resource consumption if it encounters large numbers of a particular kind of invalid DNSSEC record. Default limits on "max-records-per-type" and "max-types-per-name" help mitigate the exposure. 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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://downloads.isc.org/isc/bind9/9.20.29
https://downloads.isc.org/isc/bind9/9.21.26
https://kb.isc.org/docs/cve-2026-19668

Configurations

No configuration.

History

26 Oct 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) Un resolvedor recursivo BIND puede experimentar un consumo excesivo de recursos si encuentra un gran número de un tipo particular de registro DNSSEC inválido. Los límites predeterminados en \“max-records-per-type\” y \“max-types-per-name\” ayudan a mitigar la exposición. Este problema afecta a BIND 9 versiones desde la 9.11.0 hasta la 9.18.50 incluida, desde la 9.20.0 hasta la 9.20.27 incluida, desde la 9.21.0 hasta la 9.21.25 incluida, desde la 9.11.3?S1 hasta la 9.18.50?S1 incluida, y desde la 9.20.9?S1 hasta la 9.20.27?S1 incluida.

16 Sep 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-16 15:17

Updated : 2026-10-26 23:10

NVD link : CVE-2026-19668

Mitre link : CVE-2026-19668

CVE.ORG link : CVE-2026-19668

JSON object : View

Products Affected

No product.

CWE

CWE-407

Inefficient Algorithmic Complexity

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