Description
An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ and DoH3 are disabled by default.
Affected products
powerdns: dnsdist
References1
- www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdi… Vendor Advisory
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 32 · as of 13 November 2026
- CWE
- CWE-770
Could this be exploited in your environment?
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