Configuration Vulnerability in PowerDNS by PowerDNS
CVE-2026-33608

7.4HIGH

Key Information:

Vendor

Powerdns

Status
Authoritative
Vendor
CVE Published:
22 April 2026

What is CVE-2026-33608?

A vulnerability in PowerDNS allows an attacker to exploit the system by sending a notify request that inadvertently introduces a new secondary domain. This results in an invalid configuration update for the backend. Consequently, the backend becomes non-operational upon the next restart, necessitating manual intervention to restore functionality.

Affected Version(s)

Authoritative 5.0.0 < 5.0.4

Authoritative 4.9.0 < 4.9.14

References

https://docs.powerdns.com/authoritative/security-advisori...

CVSS V3.1

Score:
7.4
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Vitaly Simonovich
.