Medium severity6.5NVD Advisory· Published Apr 22, 2026· Updated Apr 24, 2026

CVE-2026-33602

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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

PowerDNS/Dnsdist2 versions
cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*range: >=1.9.0,<1.9.13
- (no CPE)
osv-coords
pkg:rpm/opensuse/dnsdist&distro=openSUSE%20Tumbleweed
Range: < 2.0.5-1.1

Patches

Vulnerability mechanics

References

www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.htmlnvdVendor Advisory

News mentions

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cvss	0.423
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000