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Fencer Vulns
high 7.5

CVE-2026-42001 json

Insufficient Validation of Autoprimary SOA Queries

published 2026-05-21 5 mo ago modified 2026-07-23 3 mo ago also EUVD-2026-31259

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

Insufficient Validation of Autoprimary SOA Queries

Patch / fix

  • PowerDNS Authoritative 4.9.15, 5.0.5
  • pdns Debian 13 4.9.15-0+deb13u1
  • pdns Debian 14 5.0.5-1

debian advisories DEBIAN-CVE-2026-42001

  • pdns Alpine 3.24, Alpine 3.23 5.0.5-r0

alpine advisories ALPINE-CVE-2026-42001

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-42001 updated cvss 7.5

pdns: PowerDNS Authoritative Server (pdns): Denial of Service due to insufficient query validation

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
5 mo ago

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • PowerDNS Authoritative

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.