Home / mailings [SECURITY] [DSA 6630-1] pdns-recursor security update
Posted on 14 November 2026
Debian Security Advisory- -------------------------------------------------------------------------
Debian Security Advisory DSA-6630-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
November 14, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------
Package : pdns-recursor
CVE ID : CVE-2026-73205 CVE-2026-73206 CVE-2026-85555 CVE-2026-85556
CVE-2026-85557 CVE-2026-85558 CVE-2026-85559
Multiple vulnerabilities have been discovered in PDNS Recursor, a
resolving name server which could result in denial of service or DNSSEC
validation bypass
Debian trixie previously provided the 5.2 release series which is no
longer supported upstream and since backports are not feasible this
update moves to the 5.4 release series.
Please refer to https://doc.powerdns.com/recursor/upgrade.html before
upgrading.
For the stable distribution (trixie), these problems have been fixed in
version 5.4.9-1~deb13u1.
We recommend that you upgrade your pdns-recursor packages.
For the detailed security status of pdns-recursor please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/pdns-recursor
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
