ZDI-26-199: (Pwn2Own) QNAP TS-453E conn_log_tool Format String 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 devices. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The ZDI has assigned a CVSS rating of 5.5. The following CVEs are assigned: CVE-2025-62848.

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

1

What is the severity of ZDI-26-199?

The severity of ZDI-26-199 is categorized as high due to its potential for remote code execution.

2

How do I fix ZDI-26-199?

To fix ZDI-26-199, update your QNAP TS-453E device to the latest firmware version provided by QNAP.

3

What types of attacks are possible with ZDI-26-199?

ZDI-26-199 allows network-adjacent attackers to execute arbitrary code on vulnerable QNAP TS-453E devices.

4

Is authentication required to exploit ZDI-26-199?

Yes, authentication is required to exploit the ZDI-26-199 vulnerability.

5

Which devices are affected by ZDI-26-199?

ZDI-26-199 specifically affects QNAP TS-453E devices.

Contact

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