CVE-2021-28815 - CVE House
Back to Database
Status published Medium CVE-2021-28815

Insecure Storage of Sensitive Information in myQNAPcloud Link

Vulnerability Description

Insecure storage of sensitive information has been reported to affect QNAP NAS running myQNAPcloud Link. If exploited, this vulnerability allows remote attackers to read sensitive information by accessing the unrestricted storage mechanism. This issue affects: QNAP Systems Inc. myQNAPcloud Link versions prior to 2.2.21 on QTS 4.5.3; versions prior to 2.2.21 on QuTS hero h4.5.2; versions prior to 2.2.21 on QuTScloud c4.5.4.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-28815

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • CJ Fairhead

References

More from QNAP Systems Inc.

View All →
CVE-2025-9110
QTS, QuTS hero
Low 2.7
CVE-2025-68406
Qsync Central
Low 1.3
CVE-2025-66281
QTS, QuTS hero
Medium 6.9
CVE-2025-66280
QTS, QuTS hero
Medium 5.1
CVE-2025-66279
QTS, QuTS hero
High 8.6

Affected Vendor

QNAP Systems Inc.

View all reports →

Affected Software

myQNAPcloud Link
Vulnerable Versions:
unspecified

Timeline

Official Publish: June 16th, 2021
Last Modified: September 17th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

Weaknesses (CWE)

CWE-922

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.