Advisory Details

March 16th, 2026

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

CVE ID	CVE-2025-59389
CVSS SCORE	8.0, AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	QNAP
AFFECTED PRODUCTS	TS-453E
VULNERABILITY DETAILS	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 specific flaw exists within the query_original_file_size method. The issue results from the lack of proper validation of a user-supplied string before using it to construct SQL queries. An attacker can leverage this vulnerability to execute code in the context of root.
ADDITIONAL DETAILS	QNAP has issued an update to correct this vulnerability. More details can be found at: https://www.qnap.com/en/security-advisory/qsa-25-48
DISCLOSURE TIMELINE	2025-12-15 - Vulnerability reported to vendor 2026-03-16 - Coordinated public release of advisory 2026-03-16 - Advisory Updated
CREDIT	Sina Kheirkhah (@SinSinology) of Summoning Team (@SummoningTeam)

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