ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2023-47565

QNAP VioStor NVR OS Command Injection Vulnerability

Published Dec 8, 2023 · catalog updated Jun 16, 2026 · QNAP VioStor NVR

Patch now

CVE-2023-47565 is in the CISA known-exploited catalog, due Jan 11, 2024. Confirm QNAP VioStor NVR against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High8.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
73.28%
Remediation
Remediation guidance
Affected products
cpe qnap/qvr firmware · vendor QNAP VioStor NVR

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe qnap/qvr firmwareversion unspecified
  • vendor QNAP VioStor NVRversion unspecified

How to fix CVE-2023-47565

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2023-47565 is in the CISA known-exploited catalog, due Jan 11, 2024. Confirm QNAP VioStor NVR against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-78: OS Command Injection. EPSS 73.28%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 8, 2023 · Catalog

    Detected

    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

  2. Dec 21, 2023 · CISA KEV

    Known exploited

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

  3. Jan 11, 2024 · CISA KEV

    Remediation due

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

  4. Jun 16, 2026 · Catalog

    Updated

    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

Sources

  • CISA KEVConfirmed exploitationCVE-2023-47565

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

    cisa.gov
  • CVE.orgVulnerability recordCVE-2023-47565

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-47565

    30-day exploitation probability 73.3%

    first.org
  • NIST NVDVulnerability recordCVE-2023-47565

    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 ver

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2023-47565

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

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.