CVE-2021-28799
CRITICAL KEV CISA Exploitation: ACTIVE
Ransomware noto
10.0
CVSS 3.1
Description
An improper authorization vulnerability has been reported to affect QNAP NAS running HBS 3 (Hybrid Backup Sync. ) If exploited, the vulnerability allows remote attackers to log in to a device. This issue affects: QNAP Systems Inc. HBS 3 versions prior to v16.0.0415 on QTS 4.5.2; versions prior to v3.0.210412 on QTS 4.3.6; versions prior to v3.0.210411 on QTS 4.3.4; versions prior to v3.0.210411 on QTS 4.3.3; versions prior to v16.0.0419 on QuTS hero h4.5.1; versions prior to v16.0.0419 on QuTScloud c4.5.1~c4.5.4. This issue does not affect: QNAP Systems Inc. HBS 2 . QNAP Systems Inc. HBS 1.3 .
Metadata
Severity & Metrics
10.0
CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
SSVC — CISA Coordinator
CISA Known Exploited Vulnerability
Required action
Apply updates per vendor instructions.
CISA description
QNAP NAS running HBS 3 contains an improper authorization vulnerability which can allow remote attackers to log in to a device.
Affected products (8)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| QNAP Systems Inc. | HBS 1.3 | — | all versions |
| QNAP Systems Inc. | HBS 2 | — | all versions |
| QNAP Systems Inc. | HBS 3 | QTS 4.5.2 | unspecified < v16.0.0415 |
| QNAP Systems Inc. | HBS 3 | QTS 4.3.6 | unspecified < v3.0.210412 |
| QNAP Systems Inc. | HBS 3 | QTS 4.3.4 | unspecified < v3.0.210411 |
| QNAP Systems Inc. | HBS 3 | QTS 4.3.3 | unspecified < v3.0.210411 |
| QNAP Systems Inc. | HBS 3 | QuTS hero h4.5.1 | unspecified < v16.0.0419 |
| QNAP Systems Inc. | HBS 3 | QuTScloud c4.5.1~c4.5.4 | unspecified < v16.0.0419 |
Weakness (CWE)
| CWE | Source | Description |
|---|---|---|
| CWE-285 | cna | CWE-285 Improper Authorization |
CVSS scores (1)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 10.0 | CRITICAL | 3.1 | cna | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
References (1)