CVE-2023-47565

KEVQNAP VioStor NVR OS Command Injection Vulnerability

Description

QNAP VioStar NVR contains an OS command injection vulnerability that allows authenticated users to execute commands via a network.

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

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

PublishedDec 8, 2023

Last modifiedJun 17, 2026

Added to KEVDec 21, 2023

Remediation dueJan 11, 2024

References

qnap.com/en/security-advisory/qsa-23-48Vendor Advisory
cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-47565US Government Resource

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Risk assessment · High

Actively exploited. Patch immediately.

Exploitation: Confirmed in the wild (CISA KEV)
Federal remediation deadline: Overdue by 1019 days
CVSS: 8.0 HIGH
EPSS (30-day exploit probability): 73.3% · top 1% of all CVEs
Weakness: CWE-78

Recommended actions

1.Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
2.Treat as emergency change: patch or isolate internet-facing instances first.
3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.

Assessment is derived automatically from the live signals above; verify against your own asset inventory.