Resource exhaustion in Powerdns Authoritative

CVE-2026-42001

Insufficient Validation of Autoprimary SOA Queries

Vulnerability class: DoS (Denial of Service)

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.008 (54.9th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-42001: held from 0.004 to 0.008.

EPSS over last 30 days · oldest: 0.004 · newest: 0.008 · change: +0.004

Affected products

Weakness classification (CWE)

References

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.