PT-2025-43559 · Unknown+3 · Pdns-Recursor+3

Baojun Liu + 4 · Published 2025-01-01 · Updated 2026-02-09 · CVE-2025-59024

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L

Name of the Vulnerable Software and Affected Versions PDNS Recursor versions prior to 5.2.6-0+deb13u1

Description Insufficient validation of delegation information could lead to cache pollution in PDNS Recursor, a resolving name server. The changes required to address this are too extensive to backport to the version of PDNS Recursor included in the oldstable distribution (bookworm).

Recommendations Upgrade pdns-recursor packages to version 5.2.6-0+deb13u1 or later. For affected setups using the oldstable distribution (bookworm), upgrade to Debian stable/trixie.

Fix

Insufficient Verification of Data Authenticity

Special Elements Injection

Weakness Enumeration

CWE-345

CWE-74

Related Identifiers

BDU:2026-00248

CVE-2025-59024

DSA-6045-1

Affected Products

Debian

Pdns-Recursor

Powerdns Recursor

Red Os

References · 20

• https://bdu.fstec.ru/vul/2026-00248 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-59024 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-59024 · Security Note
• https://cve.org/CVERecord?id=CVE-2025-59024 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2025-59024 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-6045-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-59024 · Vendor Advisory
• https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2025-06.html · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-59024 · Vendor Advisory
• https://redos.red-soft.ru/support/secure/uyazvimosti/uyazvimost-pdns-recursor-cve-2025-59024-7.3/?sphrase_id=1455372 · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/uyazvimost-pdns-cve-2025-59024-7.3 · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti-red-os-8-0/uyazvimost-pdns-cve-2025-59024-8.0 · Note
• https://twitter.com/CVEnew/status/2020888080702435639 · Twitter Post
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/uyazvimost-pdns-recursor-cve-2025-59024-7.3 · Note
• https://t.me/CVEtracker/44217 · Telegram Post