Is CVE-2026-42002 in the CISA KEV catalog?

No. CVE-2026-42002 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-42002?

CVE-2026-42002 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2026-42002?

CVE-2026-42002 has an EPSS score of 0.26% (18th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-42002?

Upgrade pdns on debian 13 to 4.9.15-0+deb13u1 or later.

CVE & CISA-KEV Catalog

CVE-2026-42002

MEDIUM

5.9

CVSS v3

NVD

Description

Concurrency and locking defects in GSS-TSIG

CWE-364

How to fix

Remediation Available

pdnsDebian

Fixed in:4.9.15-0+deb13u1CVE-2026-42002

Fixed in:5.0.5-1CVE-2026-42002

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.26%probability of exploitation in 30 days

18thpercentile

Low risk: more likely to be exploited than 18% of all known CVEs.

References

Other references1

docs.powerdns.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-26.