CVE-2026-42389
Fixed in a distro release EPSS <1%CVSS 5.3
This fix provides extra hardening for the 5.4.x branch by doing extra validation of incoming answers from authoritative servers.
Products: powerdns recursor
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 14 | pdns-recursor | 5.4.3-1 |
| Ubuntu 24.04 LTS | pdns-recursor | no fix |
| Ubuntu 25.10 | pdns-recursor | no fix |
| Ubuntu 26.04 LTS | pdns-recursor | no fix |
| Ubuntu 26.10 | pdns-recursor | no fix |
| Ubuntu Pro 16.04 LTS | pdns-recursor | no fix |
| Ubuntu Pro 18.04 LTS | pdns-recursor | no fix |
| Ubuntu Pro 20.04 LTS | pdns-recursor | no fix |
| Ubuntu Pro 22.04 LTS | pdns-recursor | no fix |