CVE-2021-38686

8.8 highEPSS 1.0%

High (8.8) in qnap qvr. EPSS 1.0% chance of exploitation in the next 30 days.

An improper authentication vulnerability has been reported to affect QNAP device, VioStor. If exploited, this vulnerability allows attackers to compromise the security of the system. We have already fixed this vulnerability in the following versions of QVR: QVR FW 5.1.6 build 20211109 and later

Severity

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-31)
CWE: CWE-287
Published: 2021-11-26
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

qnap:qvr

References

https://www.qnap.com/en/security-advisory/qsa-21-52
https://www.qnap.com/en/security-advisory/qsa-21-52

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