CVE-2021-28815 json
Insecure Storage of Sensitive Information in myQNAPcloud Link
published 2021-06-16 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-15471
- cvss
- 6.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.7%
- EPSS 1.7% chance of exploitation in 30 days, percentile 77%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- QNAP Systems Inc. myQNAPcloud Link 2.2.21
Exploit prediction
1.73% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.0 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N |
| NVD | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
Affected products
- QNAP Systems Inc. myQNAPcloud Link
Classification
- Weakness
-
- CWE-922 Insecure Storage of Sensitive Information
References
-
qnap.com
/zh-tw/security-advisory/qsa-21-26
vendor-advisory
Sources
- CVE List CVE-2021-28815
- NVD CVE-2021-28815
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