CVEvulnerability

CVE-2021-28809

9.8 CRITICAL Published 2021-07-08 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-07-08
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
10.0 HIGH — AV:N/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-284, CWE-306, CWE-749

Description

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 configurations

• qnap hybrid backup sync (< 3.0.210507) • qnap hybrid backup sync (< 3.0.210506)

Related

Weakness · CWE (3)

  • CWE-284 Improper Access Control weakness
  • CWE-306 Missing Authentication for Critical Functionality weakness
  • CWE-749 Exposed Dangerous Method or Function weakness

References