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VULNERABILITIES

CVE-2021-28799 Details

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 .

Metrics

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28799 CISA-ADPUS Government Resource
https://www.qnap.com/en/security-advisory/QSA-21-13 CVEVendor Advisory
https://www.qnap.com/en/security-advisory/QSA-21-13 [email protected]Vendor Advisory

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability NameDate AddedDue DateRequired Action
QNAP NAS Improper Authorization VulnerabilityMar 31, 2022Apr 21, 2022Apply updates per vendor instructions.

Weakness Enumeration

CWE-IDCWE NameSource
NVD-CWE-OtherWeakness Not in a Standard CWE Category[email protected]
CWE-285Improper Authorization[email protected]

Affected Products

ProductVersions
qnap hybrid backup sync
< 16.0.0415
< 3.0.210412
< 3.0.210411
< 16.0.0419

CPE

  • cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
qnap qts
4.5.2
4.3.6
4.3.3
4.3.4

CPE

  • cpe:2.3:o:qnap:qts:4.5.2:*:*:*:*:*:*:*
  • cpe:2.3:o:qnap:qts:4.3.6:*:*:*:*:*:*:*
  • cpe:2.3:o:qnap:qts:4.3.3:*:*:*:*:*:*:*
  • cpe:2.3:o:qnap:qts:4.3.4:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
qnap quts hero
h4.5.1

CPE

  • cpe:2.3:o:qnap:quts_hero:h4.5.1:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
qnap qutscloud
>= c4.5.1, <= c4.5.4

CPE

  • cpe:2.3:o:qnap:qutscloud:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

13 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-28799
NVD Published Date:
May 13, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-28799 Details - Not Deferred