What is CVE-2026-42001?

CVE-2026-42001 is a high-severity vulnerability in Powerdns Authoritative, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-05-21.

How severe is CVE-2026-42001?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Powerdns Authoritative

CVE-2026-42001

Insufficient Validation of Autoprimary SOA Queries

Vulnerability class: DoS (Denial of Service)

EPSS: 0.000 (5.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Powerdns Authoritative — versions 4.9.0, 5.0.0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

security@open-xchange.com (Broken Link)

Frequently asked questions

What is CVE-2026-42001?: CVE-2026-42001 is a high-severity vulnerability in Powerdns Authoritative, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-05-21.
How severe is CVE-2026-42001?: High severity. CVSS v3 base score is 7.5 out of 10.