Description

A rogue backend can send a crafted UDP response with a query ID off by one related to the maximum configured value, triggering an out-of-bounds write leading to a denial of service.

Related CPE's

a

powerdns

dnsdist

2

References

https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html

Vendor Advisory

Weaknesses

134c704f-9b21-4f2e-91b3-4a467353bcc0

Secondary
CWE-122

CVSS impact metrics

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

6.5 · Medium

Information

Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2026-04-22T14:16:54.537Z

5 months ago

Last modified

2026-06-17T10:37:46.440Z

3 months ago