Risk Letters

Exploited vulnerability

CVE-2021-28799

TLP:CLEAR

QNAP NAS Improper Authorization Vulnerability

QNAP NAS running HBS 3 contains an improper authorization vulnerability which can allow remote attackers to log in to a device.

Facts

  • Vendor: QNAP
  • Product: Network Attached Storage (NAS)
  • CVSS: 10
  • EPSS (probability of exploitation within 30 days): 78.3 %
  • On CISA's Known Exploited Vulnerabilities list since: 31 March 2022
  • First known exploitation: 31 March 2022
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 21 April 2022
  • Weakness: CWE-285
  • First seen by Risk Letters: 31 March 2022

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD