CVE-2026-42396

Name: CVE-2026-42396
Creator: NVD / NIST
Published: 2026-05-21T10:16:25.927+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.35%

Last modified Jun 17, 2026

CVE-2026-42396 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Insufficient Validation of Member Zone Data May Cause Catalog Zone Transfer to Fail. EPSS estimates a 0.35% chance of exploitation in the next 30 days.

Description

Insufficient Validation of Member Zone Data May Cause Catalog Zone Transfer to Fail

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.35%

27.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Powerdns	Authoritative	>= 4.7.0, < 4.9.15
Powerdns	Authoritative	>= 5.0.0, < 5.0.5

References

https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-06.htmlBroken Link

Timeline

Published: May 21, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-42396?

Insufficient Validation of Member Zone Data May Cause Catalog Zone Transfer to Fail

How severe is CVE-2026-42396?

CVE-2026-42396 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.

How do I fix CVE-2026-42396?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-42396?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST