Taiwan-based network-attached storage (NAS) maker QNAP has addressed a critical security vulnerability enabling attackers to compromise vulnerable NAS devices’ security. The improper access control vulnerability tracked as CVE-2021-28809 was found by Ta-Lun Yen of TXOne IoT/ICS Security Research Labs in HBS 3 Hybrid Backup Sync, QNAP’s disaster recovery and data backup solution.

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