Stack-based buffer overflow in QNAP Systems, Inc. products - CVE-2025-66280
Published: June 19, 2026
Vulnerability identifier: #VU134937
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-2025-66280
CWE-ID: CWE-121
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 code on the target system.
The vulnerability exists due to a boundary error. A remote administrator can trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2025-66280
Install updates from vendor's website.