| Name | CVE-2026-85555 |
| Description | DNSSEC validation bypass and cache poisoning in PowerDNS Recursor via out-of-band NS resolution |
| 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) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| pdns-recursor (PTS) | bookworm, bookworm (security) | 4.8.8-1+deb12u1 | vulnerable |
| trixie, trixie (security) | 5.2.13-0+deb13u1 | vulnerable |
| forky, sid | 5.4.9-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| pdns-recursor | source | bookworm | (unfixed) | end-of-life | | |
| pdns-recursor | source | (unstable) | 5.4.8-1 | | | |
Notes
[bookworm] - pdns-recursor <end-of-life> (see DSA 6045)
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2026-12.html#cve-2026-85555-dnssec-validation-bypass-and-cache-poisoning-in-powerdns-recursor-via-out-of-band-ns-resolution