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Debian pdns-recursor Critical Cache Poisoning DNSSEC Bypass DSA-6397-1

debian
Calendar Grey July 23, 2026
Scroller Debian
Upgrade pdns-recursor to address cache poisoning and DNSSEC validation bypass issues in Debian Trixie distribution.
Debian has issued an advisory for vulnerabilities in PDNS Recursor that could allow cache poisoning or DNSSEC validation bypass, urging users to upgrade to version 5.2.12-0+deb13u1...
Topics%20covered

Topics Covered

security advisory debian important dns poisoning pdns-recursor dnssec bypass

Summary

For the stable distribution (trixie), these problems have been fixed in
version 5.2.12-0+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/



Severity
important
Lowest
Low
Medium
High
Critical

Package: pdns-recursor
CVE ID: CVE-2026-52686 CVE-2026-52688

Topics%20covered

Topics Covered

security advisory debian important dns poisoning pdns-recursor dnssec bypass

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