| Name | CVE-2026-33610 |
| Description | A rogue primary server may cause file descriptor exhaustion and eventually a denial of service, when a PowerDNS secondary server forwards a DNS update request to it. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| pdns (PTS) | bullseye | 4.4.1-1 | vulnerable |
| bookworm | 4.7.3-2 | vulnerable | |
| trixie | 4.9.7-1 | vulnerable | |
| forky, sid | 5.0.3-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| pdns | source | (unstable) | (unfixed) |
https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-2026-05.html#possible-file-descriptor-exhaustion-in-forward-dnsupdate