CVE-2025-30195 A crafted zone can lead to an illegal memory access in the PowerDNS Recursor
An attacker can cause a denial of service in PowerDNS Recursor by publishing a crafted zone that triggers an illegal memory access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-30195?
CVE-2025-30195 is a high-severity vulnerability in PowerDNS Recursor, published on 7 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-476
Which versions are affected by CVE-2025-30195?
How do I fix CVE-2025-30195?
Upgrade to a fixed version.
Is CVE-2025-30195 being exploited?
There is no known exploitation of CVE-2025-30195 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2025-30195, GHSA-v9gv-mwp4-wx7g, UBUNTU-CVE-2025-30195.