The Quarterly Threat Landscape Report is out. See what attackers are targeting now.Read report
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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade pdns-recursor | Aug 8, 2025 | Apr 7, 2025 |
| Debian | — | Upgrade pdns-recursor | Jul 23, 2026 | Jul 23, 2026 |
| Freebsd | — | Upgrade powerdns-recursor | May 2, 2025 | Apr 22, 2025 |
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub