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QNAP NAS Security Restriction Bypass Vulnerability

Release Date: 9 Jul 2021 1912 Views

RISK: High Risk

TYPE: Servers - Other Servers

TYPE: Other Servers

A vulnerability was identified in QNAP NAS, a remote attacker could exploit this vulnerability to trigger security restriction bypass, sensitive information disclosure and tampering on the targeted system.


  • Security Restriction Bypass
  • Information Disclosure
  • Data Manipulation

System / Technologies affected

  • QNAP NAS running HBS 3
  • Note: QTS 4.5.x with HBS 3 v16.x is not affected


Before installation of the software, please visit the vendor web-site for more details.


Apply fixes issued by the vendor:

  • 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

Vulnerability Identifier


Related Link