CVE-2026-33593
Received Received - Intake
Divide by Zero in DNSCrypt Client Causes Crash

Publication date: 2026-04-22

Last updated on: 2026-04-24

Assigner: Open-Xchange

Description
A client can trigger a divide by zero error leading to crash by sending a crafted DNSCrypt query.
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Meta Information
Published
2026-04-22
Last Modified
2026-04-24
Generated
2026-06-16
AI Q&A
2026-04-22
EPSS Evaluated
2026-06-14
NVD
CVE-2026-33593
EUVD
EUVD-2026-24929
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
powerdns dnsdist From 1.9.0 (inc) to 1.9.13 (exc)
powerdns dnsdist From 2.0.0 (inc) to 2.0.4 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-369 The product divides a value by zero.
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Executive Summary

This vulnerability occurs when a client sends a specially crafted DNSCrypt query that triggers a divide by zero error in the system.

This error causes the affected application or service to crash.

Impact Analysis

The primary impact of this vulnerability is a denial of service condition, as the divide by zero error causes the application to crash.

An attacker can exploit this vulnerability remotely without any privileges or user interaction.

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