Read the docs
TI-2023-25733 Aliases CVE-2023-47565GHSA-vj55-4r38-w2gh

Legacy VioStor NVR

Priority CRITICAL 97Exploited in the wildCWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-78.

Summary

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

Why it matters now

Exploitation Active In CISA KEV since 2023-12-21CISA due date 2024-01-11
EPSS 0.73277 99th percentileScored 2026-11-07
Fix Fixed VioStor NVR (QNAP Systems Inc.): 5.0.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
QNAPVioStor NVR4.x to before 5.0.05.0.0Patch availableCNA
  • VioStor NVR VendorQNAP Affected 4.x to before 5.0.0 Fixed in 5.0.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:qnap:qvr_firmware:*:*:*:*:*:*:*:*4.0.0 to before 5.0.0VulnerableQNAP
  • cpe:2.3:o:qnap:qvr_firmware:*:*:*:*:*:*:*:* Versions 4.0.0 to before 5.0.0 Vulnerable ·QNAP

Remediation

  • Fix · CNA VioStor NVR (QNAP Systems Inc.) Fixed in 5.0.0

Timeline

  1. 2023-12-21 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2023-47565
  3. 2026-10-03 Alias added: GHSA-vj55-4r38-w2gh

References

Advisory 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences