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HighCISA KEVExploited in the wildPublic exploit

OS Command Injection in QNAP VioStor NVR QVR Firmware 4.x

IdentifiersCVE-2023-47565CWE-78· Improper Neutralization of Special…

CVE-2023-47565 is an OS command injection vulnerability affecting legacy QNAP VioStor NVR models running QVR Firmware 4.x. According to the provided advisory, successful exploitation allows an authenticated user to execute operating system commands over the network. The specific vulnerable function or parameter is not identified in the provided content, but the issue is explicitly described as command injection in the network-accessible management functionality of affected NVR devices.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

An authenticated attacker with network access to a vulnerable QNAP VioStor NVR can execute arbitrary OS commands on the device. This can result in full compromise of the NVR application context and potentially the underlying appliance, including unauthorized administrative actions, access to stored or managed surveillance data, service manipulation, persistence, and use of the device as a foothold for further activity on the network.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, restrict network access to the NVR management interface to trusted administrative networks only, minimize exposure of the device to untrusted networks, and limit the number of authenticated users with access to the system. Closely monitor administrative access and device activity until the firmware can be upgraded.

Remediation

Patch, then assume compromise.

Upgrade affected legacy QNAP VioStor NVR devices from QVR Firmware 4.x to QVR Firmware 5.0.0 or later. The provided content states the vulnerability has been fixed in QVR Firmware 5.0.0 and later.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
QNAP SystemsQvr Firmwareoperating_system

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What this page doesn’t show

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Exposure mapping

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Threat actor evidence

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Associated malware

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Detection signatures2

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity1

Community discussion across Reddit, Mastodon, and other social sources.