#VU114661 Improper Authentication in QVR - CVE-2025-52856

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Main Vulnerability Database Vulnerabilities #VU114661

#VU114661 Improper Authentication in QVR - CVE-2025-52856

Published: September 2, 2025


Vulnerability identifier: #VU114661
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2025-52856
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
QVR
Software vendor:
QNAP Systems, Inc.

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error when processing authentication requests. A remote attacker can bypass authentication process and gain unauthorized access to the application.

Note: The vulnerability affects the QVR firmware for legacy VioStor NVR.


Remediation

Install updates from vendor's website.

External links