Is CVE-2021-44054 in the CISA KEV catalog?

No. CVE-2021-44054 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-44054?

CVE-2021-44054 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2021-44054?

CVE-2021-44054 has an EPSS score of 0.54% (42th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-44054?

Upgrade qts to 4.5.4.1991 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-44054

MEDIUM

4.3

CVSS v3

NVD

Description

An open redirect vulnerability has been reported to affect QNAP device running QuTScloud, QuTS hero and QTS. If exploited, this vulnerability allows attackers to redirect users to an untrusted page that contains malware. We have already fixed this vulnerability in the following versions of QuTScloud, QuTS hero and QTS: QuTScloud c5.0.1.1949 and later QuTS hero h5.0.0.1949 build 20220215 and later QuTS hero h4.5.4.1951 build 20220218 and later QTS 5.0.0.1986 build 20220324 and later QTS 4.5.4.1991 build 20220329 and later

CWE-601Open Redirect

How to fix

Remediation Available

qtsNVD

Affected:>= 4.4.0.0883, < 4.5.4.1991Fixed in:4.5.4.1991CVE-2021-44054derived from NVD

Affected:>= 5.0.0.1716, < 5.0.0.1986Fixed in:5.0.0.1986CVE-2021-44054derived from NVD

quts heroNVD

Affected:>= h5.0.0.1772, < h5.0.0.1986Fixed in:h5.0.0.1986CVE-2021-44054derived from NVD

qutscloudNVD

Affected:< c5.0.1.1998Fixed in:c5.0.1.1998CVE-2021-44054derived 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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.54%probability of exploitation in 30 days

42ndpercentile

Moderate risk: more likely to be exploited than 42% of all known CVEs.

References

Vendor Advisory1

qnap.com

Related Vulnerabilities

Other CWE-601 (Open Redirect) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-4123	High	7.6	98%	-	Fix
CVE-2018-11784	Medium	4.3	94%	-	Fix
CVE-2021-22881	Medium	6.1	87%	-	Fix
CVE-2022-45402	Medium	6.1	82%	-	Fix
CVE-2017-1000117	High	8.8	78%	-	Fix
CVE-2019-10098	Medium	6.1	74%	-	Fix

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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.