CVE-2021-28799
QNAP NAS Improper Authorization Vulnerability
n/a
CVSS
78.3%
EPSS (exploit prob.)
99.5%
EPSS percentile
Yes
Actively exploited
Yes
Ransomware use
2022-03-31
Added
Summary
QNAP NAS running HBS 3 contains an improper authorization vulnerability which can allow remote attackers to log in to a device.
Affected software
Vendor: QNAP · Product: Network Attached Storage (NAS)
Weakness types (CWE):
CWE-285
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in QNAP
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2019-7195 | QNAP Photo Station Path Traversal Vulnerability | 89.7% | Yes |
| CVE-2019-7192 | QNAP Photo Station Improper Access Control Vulnerability | 88.2% | Yes |
| CVE-2022-27593 | QNAP Photo Station Externally Controlled Reference Vulnerability | 87.9% | Yes |
| CVE-2019-7194 | QNAP Photo Station Path Traversal Vulnerability | 83.0% | Yes |
| CVE-2023-47565 | QNAP VioStor NVR OS Command Injection Vulnerability | 73.3% | Yes |
| CVE-2020-2509 | QNAP Network-Attached Storage (NAS) Command Injection Vulnerability | 33.4% | Yes |
| CVE-2018-19949 | QNAP NAS File Station Command Injection Vulnerability | 24.4% | Yes |
| CVE-2018-19953 | QNAP NAS File Station Cross-Site Scripting Vulnerability | 23.9% | Yes |
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