Improper Authentication Vulnerability in VioStor
Published Nov 26, 2021
8.8
HIGHCVSS 3.1
EPSS 0.97%
Description
An improper authentication vulnerability has been reported to affect QNAP device, VioStor. If exploited, this vulnerability allows attackers to compromise the security of the system. We have already fixed this vulnerability in the following versions of QVR: QVR FW 5.1.6 build 20211109 and later
Affected products
-
- Version unspecifiedStatusaffectedConstraints<QVR FW 5.1.6 build 20211109
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| QNAP Systems Inc. | QVR | n/a |
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
We have already fixed this vulnerability in the following versions of QVR: QVR FW 5.1.6 build 20211109 and later
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.97% (0.00974) | 60.67th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.94% (0.00942) | 56.22th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.28% (0.00280) | 49.39th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.25% (0.00250) | 65.50th | v3 (v2023.03.01) |
| Jul 2, 2024 | 0.25% (0.00252) | 65.38th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.18% (0.00181) | 54.58th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.17% (0.00170) | 52.25th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.25% (0.05246) | 75.87th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.84% (0.01840) | 47.83th | v1 |
| Jan 6, 2022 | 1.84% (0.01840) | 47.32th | v1 |
| Jan 5, 2022 | 0.42% (0.00416) | 26.65th | v5 (v2026.06.15) |
| Nov 27, 2021 | 0.42% (0.00416) | 26.10th | v1 |
References (1)
- https://www.qnap.com/en/security-advisory/qsa-21-52 x_refsource_MISCVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.qnap.com/en/security-advisory/qsa-21-52 | x_refsource_MISCVendor Advisory |
Change history (0)
No recorded changes yet.