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.
Affected products
powerdns: dnsdist
References1
- www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdi… Vendor Advisory
Metrics
- CVSS 3.1
-
8.2
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H - EPSS — exploit probability
- 1% percentile: 55 · as of 13 November 2026
- CWE
- CWE-122
Could this be exploited in your environment?
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