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Vulnerabilities

Vulnerability · CVE-2026-42000

Insufficient Validation of Names During AXFR

Published May 21, 2026 · catalog updated Jul 23, 2026 · Insufficient Validation of Names

Check if you run it

No confirmed exploitation is on record for CVE-2026-42000. EPSS is 0.54%. Act only if a listed version of Insufficient Validation of Names is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Insufficient Validation of Names).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.54%
Remediation
Advisory link
Affected products
cpe powerdns/authoritative

Insufficient Validation of Names During AXFR

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe powerdns/authoritativeversion unspecified

How to fix CVE-2026-42000

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-42000. EPSS is 0.54%. Act only if a listed version of Insufficient Validation of Names is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-77: Command Injection. EPSS 0.54%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 21, 2026 · NIST NVD

    Detected

    Insufficient Validation of Names During AXFR

  2. Jul 23, 2026 · NIST NVD

    Updated

    Insufficient Validation of Names During AXFR

Sources

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.