CVE-2026-33593

Name: CVE-2026-33593
Creator: NVD / NIST
Published: 2026-04-22T14:16:53.713+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2026-33593 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A client can trigger a divide by zero error leading to crash by sending a crafted DNSCrypt query.. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

A client can trigger a divide by zero error leading to crash by sending a crafted DNSCrypt query.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.38%

30.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-369

Affected Software

Vendor	Product	Versions
Powerdns	Dnsdist	>= 1.9.0, < 1.9.13
Powerdns	Dnsdist	>= 2.0.0, < 2.0.4

References

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

Timeline

Published: Apr 22, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-33593?

A client can trigger a divide by zero error leading to crash by sending a crafted DNSCrypt query.

How severe is CVE-2026-33593?

CVE-2026-33593 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2026-33593?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-33593?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST