Actively exploited in the wild
NUUO NVRmini2 Devices Missing Authentication Vulnerability
NUUO - NVRmini2 Devices · Listed in the CISA KEV since 2024-12-18. This indicates confirmed attacks in production environments.
Required action: The impacted product is end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue utilization of the product.
CVE-2022-23227
CriticalCVSS 9.8KEVSummary
NUUO NVRmini2 through 3.11 allows an unauthenticated attacker to upload an encrypted TAR archive, which can be abused to add arbitrary users because of the lack of handle_import_user.php authentication. When combined with another flaw (CVE-2011-5325), it is possible to overwrite arbitrary files under the web root and achieve code execution as root.
Risk Assessment
An attacker can add their own user accounts without authentication and, combined with another flaw, overwrite files and gain code execution as root. This leads to full compromise of the NVR device.
Recommendation
Update NUUO NVRmini2 to a version later than 3.11 if available, or apply compensating controls. Restrict network access to the web interface and monitor for unusual TAR uploads.
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Original NVD description (English source)
NUUO NVRmini2 through 3.11 allows an unauthenticated attacker to upload an encrypted TAR archive, which can be abused to add arbitrary users because of the lack of handle_import_user.php authentication. When combined with another flaw (CVE-2011-5325), it is possible to overwrite arbitrary files under the web root and achieve code execution as root.