CVE-2025-30195: A crafted zone can lead to an illegal memory access in the PowerDNS Recursor
First published: Mon Apr 07 2025(Updated: )
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.
Credit: security@open-xchange.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| PowerDNS | <5.2.1 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-30195?
CVE-2025-30195 has been classified as a denial of service vulnerability that can lead to crashes in the PowerDNS Recursor.
How do I fix CVE-2025-30195?
To fix CVE-2025-30195, upgrade to the patched version 5.2.1 of PowerDNS Recursor.
What causes CVE-2025-30195?
CVE-2025-30195 is caused by an attacker publishing a zone containing specific Resource Record Sets that lead to illegal memory accesses.
What are the symptoms of CVE-2025-30195?
Symptoms of CVE-2025-30195 include crashes of the Recursor, resulting in denial of service.
Which versions of PowerDNS are affected by CVE-2025-30195?
Versions of PowerDNS Recursor prior to 5.2.1 are affected by CVE-2025-30195.
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