Code Injection in PowerDNS Authoritative - CVE-2026-33608
Published: April 22, 2026
Vulnerability identifier: #VU126869
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2026-33608
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PowerDNS.COM B.V.
Affected software:
PowerDNS Authoritative
PowerDNS Authoritative
Detailed vulnerability description
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.
How to mitigate CVE-2026-33608
Install security update from vendor's website.