Code Injection in PowerDNS Authoritative - CVE-2026-33608

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Main Vulnerability Database Vulnerabilities #VU126869

Code Injection in PowerDNS Authoritative - CVE-2026-33608

Published: April 22, 2026


Vulnerability identifier: #VU126869
CSH Severity: Medium
CVSS v4: 8.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-33608
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to corrupt configuration data and cause a denial of service.

The vulnerability exists due to code injection in Bind autosecondary zone transfer handling when processing crafted notify packets. A remote attacker can send a crafted notify request to corrupt configuration data and cause a denial of service.

Exploitation requires the Bind backend in autosecondary mode.


Affected software

PowerDNS Authoritative
Debian Linux
pdns (Debian package)

How to mitigate CVE-2026-33608

Install security update from vendor's website.

PowerDNS Authoritative - addressed in versions 4.9.14, 5.0.4
pdns (Debian package) - update to 4.9.14-0+deb13u1

External References

Related Security Bulletins