How severe is CVE-2026-42001?

CVE-2026-42001 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-42001 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-42001?

CVE-2026-42001 affects Powerdns Authoritative. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-42001?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-42001 have an EU (EUVD) identifier?

Yes. CVE-2026-42001 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31259.

When was CVE-2026-42001 published?

CVE-2026-42001 was published on 2026-05-21 and last updated on 2026-06-17.

CVE-2026-42001

CVE-2026-42001 is a high-severity vulnerability in Powerdns Authoritative with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31259
Weakness: CWE-400
Affected product: Powerdns Authoritative
Published: 2026-05-21
Last modified: 2026-06-17

Description

Insufficient Validation of Autoprimary SOA Queries

Frequently asked questions

What is CVE-2026-42001?: Insufficient Validation of Autoprimary SOA Queries
How severe is CVE-2026-42001?: CVE-2026-42001 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-42001 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-42001?: CVE-2026-42001 affects Powerdns Authoritative. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-42001?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-42001 have an EU (EUVD) identifier?: Yes. CVE-2026-42001 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31259.
When was CVE-2026-42001 published?: CVE-2026-42001 was published on 2026-05-21 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:*

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