NULL pointer dereference in QNAP QTS and QuTS hero - CVE-2025-53405
Published: January 5, 2026
Vulnerability identifier: #VU120934
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-53405
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: QNAP Systems, Inc.
Affected software:
QNAP QTS
QuTS hero
QNAP QTS
QuTS hero
Detailed vulnerability description
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote administrator can pass specially crafted data to the application and perform a denial of service (DoS) attack.
How to mitigate CVE-2025-53405
Install updates from vendor's website.