CVE-2026-33593

Denial of service via crafted DNSCrypt query

Published Apr 22, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
A client can trigger a divide by zero error leading to crash by sending a crafted DNSCrypt query.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Debian DSA Debian DSA DSA-6235-1 dnsdist security update
History
Type Values Removed Values Added
CPEs cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Powerdns
Powerdns dnsdist
Vendors & Products Powerdns
Powerdns dnsdist
Type Values Removed Values Added
Weaknesses CWE-369
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A client can trigger a divide by zero error leading to crash by sending a crafted DNSCrypt query.
Title Denial of service via crafted DNSCrypt query
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
OX
Published
Updated
Apr 22, 2026, 2:29 PM
Reserved
Mar 23, 2026, 12:57 PM
Status
Analyzed
Published
Apr 22, 2026, 2:16 PM
Modified
Oct 26, 2026, 9:10 PM