CVE-2023-47565
QNAP VioStor NVR OS Command Injection Vulnerability
Published Dec 8, 2023 · corrected/updated Jun 16, 2026 · qnap qvr firmware · evidence confidence very high
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
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2023-47565 is a high public vulnerability record for qnap qvr firmware. CISA lists it as known exploited. Published remediation guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether qnap qvr firmware is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: qnap/qvr firmware; QNAP VioStor NVR. Published remediation guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 8.8, EPSS 73.3%. CISA lists it as known exploited. Weakness classes: CWE-78. Sources contributing to this record: cisa_kev, cve_org, epss, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Confirmed in CISA KEV since Dec 21, 2023. Listed in the CISA Known Exploited Vulnerabilities catalog.
Patch and remediation
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA due date Jan 11, 2024.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
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.
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
Dec 21, 2023 · CISA KEV
Known exploited
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Jan 11, 2024 · CISA KEV
Remediation due
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
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
Affected
- cpe qnap/qvr firmwareversion unspecified
- vendor QNAP VioStor NVRversion unspecified
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