Vulnerability Details CVE-2021-28809
An improper access control vulnerability has been reported to affect certain legacy versions of HBS 3. If exploited, this vulnerability allows attackers to compromise the security of the operating system.QNAP have already fixed this vulnerability in the following versions of HBS 3: QTS 4.3.6: HBS 3 v3.0.210507 and later QTS 4.3.4: HBS 3 v3.0.210506 and later QTS 4.3.3: HBS 3 v3.0.210506 and later
Exploit prediction scoring system (EPSS) score
EPSS Score 0.006
EPSS Ranking 67.8%
CVSS Severity
CVSS v3 Score 9.8
CVSS v2 Score 10.0
References
Products affected by CVE-2021-28809
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cpe:2.3:a:qnap:hybrid_backup_sync:-
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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:o:qnap:qts:4.3.3
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cpe:2.3:o:qnap:qts:4.3.4
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cpe:2.3:o:qnap:qts:4.3.6