CVE-2026-33602

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:powerdns:dnsdist::::::::
	cpe:2.3:a:powerdns:dnsdist::::::::

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Un backend malicioso puede enviar una respuesta UDP manipulada con un ID de consulta desfasado en uno respecto al valor máximo configurado, desencadenando una escritura fuera de límites que lleva a una denegación de servicio.

Information

Published : 2026-04-22 14:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-33602

Mitre link : CVE-2026-33602

CVE.ORG link : CVE-2026-33602

JSON object : View

Products Affected

powerdns

dnsdist

CWE

CWE-122

Heap-based Buffer Overflow

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