CVE-2021-34344: QNAP QUSBCAM2

Critical severity, CVSS 9.8. EPSS: 1.6% chance of exploitation in the next 30 days.

A stack buffer overflow vulnerability has been reported to affect QNAP device running QUSBCam2. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of QUSBCam2: QTS 4.5.4: QUSBCam2 1.1.4 ( 2021/07/30 ) and later QTS 5.0: QUSBCam2 2.0.1 ( 2021/08/03 ) and later QTS 4.3.6: QUSBCam2 1.1.4 ( 2021/07/30 ) and later QTS 4.3.3: QUSBCam2 1.1.4 ( 2021/08/06 ) and later QuTS hero 4.5.3: QUSBCam2 1.1.4 ( 2021/07/30 ) and later

Affected products

• QNAP QUSBCAM2: before 1.1.4 (fixed in 1.1.4)

Published 2021-09-10. Last modified 2026-06-17.