ZDI-26-202: (Pwn2Own) QNAP TS-453E Hyper Data Protector Plugin query_original_file_size SQL Injection Remote Code Execution Vulnerability

Published Mar 16, 2026

Updated

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of QNAP TS-453E. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The ZDI has assigned a CVSS rating of 8.0. The following CVEs are assigned: CVE-2025-59389.

Affected Software

1 affected component

QNAP TS-453E

Event History

Mar 16, 2026

Advisory Published

via ZDI·05:00 AM

Data Sourced

via ZDI·05:00 AM

Description

Frequently Asked Questions

What is the severity of ZDI-26-202?

The severity of ZDI-26-202 is high, as it allows remote code execution on vulnerable QNAP TS-453E installations.

How do I fix ZDI-26-202?

To fix ZDI-26-202, update to the latest firmware provided by QNAP for the TS-453E.

Who is affected by ZDI-26-202?

Users of the QNAP TS-453E with the Hyper Data Protector Plugin are affected by ZDI-26-202.

Can ZDI-26-202 be exploited without authentication?

No, ZDI-26-202 requires authentication to exploit the SQL injection vulnerability.

What type of vulnerability is ZDI-26-202?

ZDI-26-202 is an SQL injection vulnerability that can lead to remote code execution.