CVE-2026-42000: Insufficient Validation of Names During AXFR

Published May 21, 2026
·
Updated

Insufficient Validation of Names During AXFR

Affected Software

2 affected components
PowerDNS Authoritative<4.9.15
PowerDNS Authoritative>=5.0.0<5.0.5

Event History

May 21, 2026
CVE Published
via MITRE·09:25 AM
Data Sourced
via MITRE·09:25 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·10:16 AM
DescriptionSeverityWeaknessAffected Software
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2026-42000?

The severity of CVE-2026-42000 is rated as high with a score of 8.6.

2

How do I fix CVE-2026-42000?

To fix CVE-2026-42000, update the PowerDNS Authoritative software to the latest version that addresses this vulnerability.

3

What is the impact of CVE-2026-42000?

CVE-2026-42000 allows for insufficient validation of names during AXFR, potentially leading to command injection vulnerabilities.

4

Which software is affected by CVE-2026-42000?

CVE-2026-42000 affects the PowerDNS Authoritative software.

5

When was CVE-2026-42000 published?

CVE-2026-42000 was published on May 21, 2026.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203