Advisory Details

July 31st, 2025

(Pwn2Own) QNAP TS-464 Samba Command Argument Injection Vulnerability

CVE ID
CVSS SCORE	6.3, AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
AFFECTED VENDORS	QNAP
AFFECTED PRODUCTS	TS-464
VULNERABILITY DETAILS	This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of QNAP TS-464 devices. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the provided username during authentication. The issue results from the lack of proper validation of a user-supplied string before using it to construct command line arguments. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of admin.
ADDITIONAL DETAILS	QNAP has issued an update to correct this vulnerability. More details can be found at: https://www.qnap.com/en-us/security-advisories
DISCLOSURE TIMELINE	2024-12-02 - Vulnerability reported to vendor 2025-07-31 - Coordinated public release of advisory 2025-07-31 - Advisory Updated
CREDIT	YingMuo (@YingMuo), working with DEVCORE Internship Program.

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