Read the docs
TI-2021-16256 Aliases CVE-2021-38685GHSA-5647-h66r-5vj6

Command Injection Vulnerability in VioStor

Priority MEDIUM 45CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
None
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 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

A command injection vulnerability has been reported to affect QNAP device, VioStor. If exploited, this vulnerability allows remote attackers to run arbitrary commands. We have already fixed this vulnerability in the following versions of QVR: QVR FW 5.1.6 build 20211109 and later

Why it matters now

EPSS 0.01471 73rd percentileScored 2026-11-07
Fix Fixed QVR (QNAP Systems Inc.): QVR FW 5.1.6 build 20211109

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
QNAPQVRbefore QVR FW 5.1.6 build 20211109QVR FW 5.1.6 build 20211109Patch availableCNA
  • QVR VendorQNAP Affected before QVR FW 5.1.6 build 20211109 Fixed in QVR FW 5.1.6 build 20211109 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:qnap:qvr:*:*:*:*:*:*:*:*before 5.1.6VulnerableQNAP
  • cpe:2.3:a:qnap:qvr:*:*:*:*:*:*:*:* Versions before 5.1.6 Vulnerable ·QNAP

Remediation

  • Fix · CNA QVR (QNAP Systems Inc.) Fixed in QVR FW 5.1.6 build 20211109

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    QNAP Systems QVR QVR FW 5.1.6 build 20211109

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2021-16257 Improper Authentication Vulnerability in VioStorPriority MEDIUM 40
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-38685
  2. 2026-10-03 Alias added: GHSA-5647-h66r-5vj6

References

Advisory 1

  • TI-2025-32893 Improper authentication in QNAP VioStor CVSS 4.0CRITICAL 9.3
  • TI-2022-10579 Vulnerability in QVR CVSS 3.1CRITICAL 9.8
  • TI-2021-13392 Command Injection Vulnerability in QVR CVSS 3.1CRITICAL 9.8
  • TI-2021-13391 Command Injection Vulnerability in QVR CVSS 3.1CRITICAL 9.8
  • TI-2021-13389 Command Injection Vulnerability in QVR CVSS 3.1CRITICAL 9.8
  • TI-2021-16257 Improper Authentication Vulnerability in VioStor CVSS 3.1HIGH 8.8
See all 9 →

Sources

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