CVE-2026-33593 — HIGH (7.5)

Q: What is CVE-2026-33593?

CVE-2026-33593 is a vulnerability with a CVSS score of 7.5 (HIGH). A client can trigger a divide by zero error leading to crash by sending a crafted DNSCrypt query.

Q: How severe is CVE-2026-33593?

CVE-2026-33593 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-33593?

Check the references section above for vendor advisories and patch information. Affected products include: Powerdns Dnsdist.

Vulnerability Description

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

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Powerdns	Dnsdist	>= 1.9.0, < 1.9.13

Related Weaknesses (CWE)

CWE-369

References

https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-0Vendor Advisory

FAQ

What is CVE-2026-33593?

CVE-2026-33593 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-33593?

Check the references section above for vendor advisories and patch information. Affected products include: Powerdns Dnsdist.