CVE-2025-30195

EUVD-2025-10022
An attacker can publish a zone containing specific Resource Record Sets. Processing and caching results for these sets can lead to an illegal memory accesses and crash of the Recursor, causing a denial of service.

The remedy is: upgrade to the patched 5.2.1 version.

We would like to thank Volodymyr Ilyin for bringing this issue to our attention.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
OXCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
powerdnsrecursor
5.2.0
CNA
Debian logo
Debian Releases
Debian Product
Codename
pdns-recursor
bookworm
4.8.8-1+deb12u1
fixed
bookworm (security)
4.8.8-1+deb12u1
fixed
bullseye
4.4.2-3
fixed
forky
5.4.0-1
fixed
sid
5.4.0-1
fixed
trixie
5.2.8-0+deb13u1
fixed
trixie (security)
5.2.8-0+deb13u1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
pdns-recursor
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
oracular
ignored
plucky
ignored
questing
needs-triage
xenial
needs-triage
Common Weakness Enumeration
References
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2025-01.html
http://www.openwall.com/lists/oss-security/2025/04/07/1