Crafted delegations or IP fragments can poison cached delegations in Recursor.

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - Crafted delegations or IP fragments can poison cached delegations in Recursor. (CVE-2025-59023,
    CVE-2025-59024)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the c4fb21e4-b579-11f0-871c-6805ca2fa271 advisory.

    PowerDNS Team reports:
    It has been brought to our attention that the Recursor does not               apply strict enough validation of received delegation information.
              The malicious delegation information can be sent by an attacker               spoofing packets.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 13 host has a package installed that is affected by multiple vulnerabilities as referenced in the dsa-6045 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6045-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     October 29, 2025                      https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : pdns-recursor     CVE ID         : CVE-2025-59023 CVE-2025-59024

    Two vulnerabiliites have been discovered in PDNS Recursor, a resolving     name server: Delegation information was insufficiently validated, which     could result in cache pollution.

    These changes are too intrusive to be backported to the version of     the PDNS recursor in the oldstable distribution (bookworm). For     affected setups an update to Debian stable/trixie is recommended,     no further security updates for pdns-recursor in Bookworm will be issued.

    For the stable distribution (trixie), these problems have been fixed in     version 5.2.6-0+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/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Crafted delegations or IP fragments can poison cached delegations in Recursor. (CVE-2025-59023)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - An attacker spoofing answers to ECS enabled requests sent out by the Recursor has a chance of success
    higher than non-ECS enabled queries. The updated version include various mitigations against spoofing
    attempts of ECS enabled queries by chaining ECS enabled requests and enforcing stricter validation of the
    received answers. The most strict mitigation done when the new setting outgoing.edns_subnet_harden (old
    style name edns-subnet-harden) is enabled. (CVE-2025-30192)

  - Crafted delegations or IP fragments can poison cached delegations in Recursor. (CVE-2025-59023,
    CVE-2025-59024)

ID	Name	Product	Family	Severity
436234	Alpine: multiple pdns-recursor packages: security update to 5.3.0-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	high
436234	Alpine: multiple pdns-recursor packages: security update to 5.3.0-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	high
272091	FreeBSD : powerdns-recursor -- cache pollution (c4fb21e4-b579-11f0-871c-6805ca2fa271)	Nessus	FreeBSD Local Security Checks	critical
271978	Debian dsa-6045 : pdns-recursor - security update	Nessus	Debian Local Security Checks	critical
271577	Linux Distros Unpatched Vulnerability : CVE-2025-59023	Nessus	Misc.	high
428719	Alpine: multiple pdns-recursor packages: security update to 5.2.5-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	high
428719	Alpine: multiple pdns-recursor packages: security update to 5.2.5-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	high

Detections

Analytics

CVE-2025-59023

high

Tenable Plugins

high

high

critical

critical

high

high

high