Vulnerability/
REDHAT-BUG-2405830

REDHAT-BUG-2405830: High severity ISC BIND vulnerability

Published Oct 22, 2025

Updated

Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead to CPU exhaustion.

Affected Software

1 affected component

ISC BIND

Event History

Oct 22, 2025

Data Sourced

via Red Hat·03:24 PM

DescriptionSeverityAffected Software

Frequently Asked Questions

What kind of query traffic can trigger the issue?

The issue is triggered by queries for records in a specially crafted DNS zone that contains certain malformed DNSKEY records.

What is the operational impact of successful exploitation?

Processing the affected queries can exhaust CPU resources, potentially degrading or denying DNS service.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

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