---
id: CVE-2025-59029
title: >-
  An attacker can trigger an assertion failure by requesting crafted DNS
  records, waiting for them to be inserted into the records cache, then send a
  query with qtype set to ANY.
summary: >-
  An attacker can trigger an assertion failure by requesting crafted DNS
  records, waiting for them to be inserted into the records cache, then send a
  query with qtype set to ANY.
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-617
vendor: powerdns
product: recursor
affected:
  - recursor = 5.3.0
  - recursor = 5.3.1
published: '2025-12-09'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T20:10:01.970'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-59029'
references:
  - url: >-
      https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2025-07.html
    label: security@open-xchange.com
tags:
  - nvd
epss: 0.00374
epssPercentile: 0.2918
ingestedAt: '2026-10-07T20:46:46.798Z'
---

## Overview

An attacker can trigger an assertion failure by requesting crafted DNS records, waiting for them to be inserted into the records cache, then send a query with qtype set to ANY.

## Affected

- `recursor = 5.3.0`
- `recursor = 5.3.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.