High severity · published Nov 26, 2021
CVE-2021-38686
An improper authentication vulnerability has been reported to affect QNAP device, VioStor
8.8
CVSS
1%
EPSS
No
On KEV
Description
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
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 62% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QV
Qvr · Qnap
before 5.1.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-38686
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-38686
Vendor Advisory
https://www.qnap.com/en/security-advisory/qsa-21-52
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