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CVE-2026-33593

Denial of service via crafted DNSCrypt query

Published: Apr 22, 2026Updated: Apr 22, 2026 Sources: CVE List NVD
NVD MITRE
7.5CVSS
HIGH

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

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High

Weaknesses

CWE-369

Affected Products

DNSdist
PowerDNS

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

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

Timeline

Published
Apr 22, 2026
Last Updated
Apr 22, 2026

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