Is CVE-2021-28815 in the CISA KEV catalog?

No. CVE-2021-28815 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-28815?

CVE-2021-28815 has a CVSS v3 base score of 6.0 (MEDIUM).

What is the EPSS score for CVE-2021-28815?

CVE-2021-28815 has an EPSS score of 1.71% (74th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-28815?

Upgrade myqnapcloud link to 2.2.21 or later.

CVE & CISA-KEV Catalog

CVE-2021-28815

MEDIUMEPSS 74th pctl

6.0

CVSS v3

NVD

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.

CWE-922

How to fix

Remediation Available

myqnapcloud linkNVD

Affected:< 2.2.21Fixed in:2.2.21CVE-2021-28815derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

1.71%probability of exploitation in 30 days

74thpercentile

Elevated risk: more likely to be exploited than 74% of all known CVEs.

References

Vendor Advisory1

qnap.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.