CVE-2023-47565 HIGH

CVE-2023-47565: Legacy VioStor NVR

Vendor Qnap Systems Inc.
Product VioStor NVR
Weakness CWE-78
KEV Status Known Exploited
Published December 8, 2023
Last update October 21, 2025
View on NVD All CVEs

CVSS base score

8.0/10
Attack vector Adjacent
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

An OS command injection vulnerability has been found to affect legacy QNAP VioStor NVR models running QVR Firmware 4.x. If exploited, the vulnerability could allow authenticated users to execute commands via a network. We have already fixed the vulnerability in the following versions: QVR Firmware 5.0.0 and later

CISA mandated remediation

02CISA Required Action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Key dates

03Disclosure timeline

December 8, 2023 CVE published
October 21, 2025 Record updated