Vulnerability · Published Dec 9, 2025 · Assigned by OX
CVE-2025-59029Internal logic flaw in cache management can lead to a denial of service in PowerDNS Recursor
Medium 5.3
In plain English
A medium-severity security flaw in Recursor from PowerDNS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.4%top 68.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.23 | pdns-recursor | 5.3.1-r1 | ALPINE-CVE-2025-59029 |
| Alpine:v3.24 | pdns-recursor | 5.3.1-r1 | ALPINE-CVE-2025-59029 |
| Debian:14 | pdns-recursor | 5.3.3-1 | DEBIAN-CVE-2025-59029 |
| Ubuntu:24.04:LTS | pdns-recursor | no fix listed | UBUNTU-CVE-2025-59029 |
| Ubuntu:25.10 | pdns-recursor | no fix listed | UBUNTU-CVE-2025-59029 |
| Ubuntu:26.04:LTS | pdns-recursor | no fix listed | UBUNTU-CVE-2025-59029 |
| Ubuntu:26.10 | pdns-recursor | no fix listed | UBUNTU-CVE-2025-59029 |
Affected products (as reported)
Weakness: CWE-617 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L