PT-2025-43558 · Debian+3 · Debian+3

Baojun Liu + 4 · Published 2025-01-01 · Updated 2026-04-28 · CVE-2025-59023

Positive Technologies (AI Summary)

CVSS v2.0

8.5

High

Base vector

AV:N/AC:L/Au:N/C:N/I:C/A:P

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

Description Insufficient validation of delegation information could lead to cache pollution in PowerDNS Recursor, a resolving name server. Updates will not be backported to the version of PDNS recursor in the oldstable distribution (bookworm).

Recommendations Upgrade pdns-recursor packages to version 5.2.6-0+deb13u1. For affected setups, an update to Debian stable/trixie is recommended.

Fix

Special Elements Injection

Weakness Enumeration

CWE-74

CWE-294

Related Identifiers

BDU:2026-00247

CVE-2025-59023

DSA-6045-1

Affected Products

Debian

Powerdns Recursor

Red Os

Pdns-Recursor

References · 24

• https://ubuntu.com/security/CVE-2025-59023 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-59023 · Security Note
• https://osv.dev/vulnerability/DSA-6045-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-59023 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-00247 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2025-59023 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-59023 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-59023 · Security Note
• https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2025-06.html · Vendor Advisory
• https://t.me/CVEtracker/44216 · Telegram Post
• https://twitter.com/CVEnew/status/2020888081620951441 · Twitter Post
• https://seclists.org/oss-sec/2025/q4/69https://seclists.org/oss-sec/2025/q4/69 · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/uyazvimost-pdns-cve-2025-59023-7.3 · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/uyazvimost-pdns-recursor-cve-2025-59023-7.3 · Note
• https://twitter.com/transilienceai/status/2023238630739677213 · Twitter Post