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…

critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

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

Affected

4 ranges

Vendor	Product	Version range	Fixed in
qnap	hybrid_backup_sync	< 3.0.210507	3.0.210507
qnap	hybrid_backup_sync	< 3.0.210506	3.0.210506
qnap_systems_inc	hbs_3	>= unspecified < v3.0.210507	v3.0.210507
qnap_systems_inc	hbs_3	>= unspecified < v3.0.210506	v3.0.210506