Vulnerability Details CVE-2021-28799
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 .
Exploit prediction scoring system (EPSS) score
EPSS Score 0.888
EPSS Ranking 99.5%
CVSS Severity
CVSS v3 Score 10.0
CVSS v2 Score 7.5
Proposed Action
QNAP NAS running HBS 3 contains an improper authorization vulnerability which can allow remote attackers to log in to a device.
Ransomware Campaign
Known
References
Products affected by CVE-2021-28799
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cpe:2.3:a:qnap:hybrid_backup_sync:-
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cpe:2.3:a:qnap:hybrid_backup_sync:16.0.0415
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cpe:2.3:a:qnap:hybrid_backup_sync:3.0.210411
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cpe:2.3:a:qnap:hybrid_backup_sync:3.0.210412
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cpe:2.3:a:qnap:hybrid_backup_sync:3.0.210506
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cpe:2.3:a:qnap:hybrid_backup_sync:3.0.210507
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cpe:2.3:a:qnap:qts:4.3.3
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cpe:2.3:a:qnap:qts:4.3.4
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cpe:2.3:a:qnap:qts:4.5.2
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cpe:2.3:o:qnap:qts:4.3.6
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cpe:2.3:o:qnap:quts_hero:h4.5.1
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cpe:2.3:o:qnap:qutscloud:c4.5.1
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cpe:2.3:o:qnap:qutscloud:c4.5.1.1350
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cpe:2.3:o:qnap:qutscloud:c4.5.2.1379
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cpe:2.3:o:qnap:qutscloud:c4.5.3
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cpe:2.3:o:qnap:qutscloud:c4.5.4