CVE-2021-34344

Stack Buffer Overflow Vulnerability in QUSBCam2

Description

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

Remediation

Solution:

  • 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

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.81% Top 30%
Vendor Advisory qnap.com
Affected: QNAP Systems Inc. QUSBCam2
Affected: QNAP Systems Inc. QUSBCam2
Affected: QNAP Systems Inc. QUSBCam2
Affected: QNAP Systems Inc. QUSBCam2
Affected: QNAP Systems Inc. QUSBCam2
Published at:
Updated at:

References

Link Tags
https://www.qnap.com/en/security-advisory/qsa-21-34 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-34344?
CVE-2021-34344 has been scored as a critical severity vulnerability.
How to fix CVE-2021-34344?
To fix CVE-2021-34344: 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
Is CVE-2021-34344 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-34344 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-34344?
CVE-2021-34344 affects QNAP Systems Inc. QUSBCam2, QNAP Systems Inc. QUSBCam2, QNAP Systems Inc. QUSBCam2, QNAP Systems Inc. QUSBCam2, QNAP Systems Inc. QUSBCam2.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.