OS Command Injection in QNAP Systems, Inc. products - CVE-2025-66273
Published: June 19, 2026
Vulnerability identifier: #VU134933
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-66273
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: QNAP Systems, Inc.
Affected software:
QuTScloud
QuTS hero
QVP (QVR Pro appliances)
QNAP QTS
QuTScloud
QuTS hero
QVP (QVR Pro appliances)
QNAP QTS
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation in the username parameter. A remote administrator can pass specially crafted data to the application and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2025-66273
Install updates from vendor's website.