Open Redirect in QNAP Qts
CVE-2021-44054
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
Vulnerability class: Open Redirect
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (45.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
- QNAP Qts — versions 4.2.6
- QNAP Qutscloud
- QNAP Quts Hero
- QNAP Systems Inc. Qts — versions unspecified
- QNAP Systems Inc. Qutscloud — versions unspecified
- QNAP Systems Inc. Quts Hero — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.qnap.com/en/security-advisory/qsa-22-16 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-44054?
- CVE-2021-44054 is a medium-severity vulnerability in QNAP Qts, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.3/10. Published 2022-05-05.
- How severe is CVE-2021-44054?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2021-44054 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.