
QNAP releases security patches for critical vulnerabilities in VioStor NVR systems.
QNAP Systems has released security updates to address several vulnerabilities in the QVR firmware of its VioStor Network Video Recorder (NVR) systems. On August 29, 2025, two serious security vulnerabilities were disclosed, prompting the company to promptly update their systems to prevent potential security breaches. QNAP responded quickly to these security reports by releasing updated firmware that addresses both vulnerabilities. Legacy VioStor NVR systems running QVR 5.1.x are affected, but users can now update to QVR 5.1.6 build 20250621 or later to eliminate these security risks. The security advisory discloses two separate vulnerabilities that could compromise the integrity of legacy VioStor NVR










