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Fencer Vulns
high 7.5

CVE-2025-59030 json

Insufficient validation of incoming notifies over TCP can lead to a denial of service in Recursor

published 2025-12-09 11 mo ago modified 2026-10-07 32 d ago also EUVD-2025-201912

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits
0
none known

Summary

An attacker can trigger the removal of cached records by sending a NOTIFY query over TCP.

Patch / fix

  • PowerDNS Recursor 5.1.9, 5.2.7, 5.3.3
  • pdns-recursor Debian 13 5.2.7-0+deb13u1
  • pdns-recursor Debian 14 5.3.3-1

debian advisories DEBIAN-CVE-2025-59030

  • pdns-recursor Alpine 3.22 5.2.6-r0
  • pdns-recursor Alpine 3.24, Alpine 3.23 5.3.1-r1

alpine advisories ALPINE-CVE-2025-59030

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-2025-59030 updated cvss 7.5

powerdns_recursor: Insufficient validation of incoming notifies over TCP can lead to a denial of service

  • 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
11 mo ago

Exploit prediction

0.58% chance of exploitation in the next 30 days, higher than 48% 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 Recursor

Classification

Weakness
  • CWE-276 Incorrect Default Permissions

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.