CVE-2026-33593
Denial of service via crafted DNSCrypt query
HIGH
7.5
CVSS Score
Published: April 22, 2026 at 01:48 PM UTC
Updated: October 26, 2026 at 09:10 PM UTC
2 products affected across 1 vendorDNSdistAuthoritative
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Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit
Description
A client can trigger a divide by zero error leading to crash by sending a crafted DNSCrypt query.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 1.9.13, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.0.4, so it looks safe — our inference, not a vendor statement
All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
Vendor Advisory
Source: cverecord
https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.htmlSSVC — Action Prioritization
SSVCNo known exploitAutomatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.5HIGHOX
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusANALYZED
CWE
CWE-369
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