QNAP Network Attached Storage (NAS)
YES - ON THE CISA KEV LIST
CVE-2021-28799
QNAP NAS Improper Authorization Vulnerability
overdue since 2022-04-21
QNAP: 11 entries (0.6% of all KEV entries are from this vendor); 0 added in 2026.
BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.
Your BOD 26-04 window (SSVC tier helper)
Your remediation window ends:
Description
QNAP NAS running HBS 3 contains an improper authorization vulnerability which can allow remote attackers to log in to a device.
Required action (CISA)
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-28799
References
Other KEV entries for this vendor: QNAP
- CVE-2023-47565 - VioStor NVR (2023-12-21)
- CVE-2022-27593 - Photo Station (2022-09-08)
- CVE-2019-7195 - Photo Station (2022-06-08)
- CVE-2019-7194 - Photo Station (2022-06-08)
- CVE-2019-7193 - QTS (2022-06-08)
- CVE-2019-7192 - Photo Station (2022-06-08)
- CVE-2018-19953 - Network Attached Storage (NAS) (2022-05-24)
- CVE-2018-19949 - Network Attached Storage (NAS) (2022-05-24)
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