CVE-2023-47565: QNAP VioStor NVR OS Command Injection Vulnerability

Vulnerability summary

CVE-2023-47565 is a high (CVSS 8.8) OS Command Injection vulnerability in QNAP VioStor NVR. It is known to be exploited: CISA lists it, first on 21-12-2023. EPSS estimates a 73.28% chance of exploitation in the next 30 days, higher than 99.4% of scored vulnerabilities.

Timeline

1. 08-12-2023
   PublishedVulnerability first disclosed.
2. 21-12-2023
   Added to CISA KEVQNAP VioStor NVR OS Command Injection Vulnerability
3. 11-01-2024
   CISA remediation dueApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
4. 21-10-2025
   Last modifiedVulnerability information updated.

Description

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

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.