// For flags

CVE-2021-28800

Command Injection Vulnerability in QTS

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A command injection vulnerability has been reported to affect QNAP NAS running legacy versions of QTS. If exploited, this vulnerability allows attackers to execute arbitrary commands in a compromised application. This issue affects: QNAP Systems Inc. QTS versions prior to 4.3.6.1663 Build 20210504; versions prior to 4.3.3.1624 Build 20210416. This issue does not affect: QNAP Systems Inc. QTS 4.5.3. QNAP Systems Inc. QuTS hero h4.5.3. QNAP Systems Inc. QuTScloud c4.5.5.

Se ha reportado una vulnerabilidad de inyección de comandos que afecta a QNAP NAS ejecutando versiones heredadas de QTS. Si es explotado, esta vulnerabilidad permite a atacantes ejecutar comandos arbitrarios en una aplicación comprometida. Este problema afecta: QNAP Systems Inc. QTS versiones anteriores a 4.3.6.1663 Build 20210504; versiones anteriores a 4.3.3.1624 Build 20210416. Este problema no afecta a: QNAP Systems Inc. QTS versión 4.5.3. QNAP Systems Inc. QuTS hero h4.5.3. QNAP Systems Inc. QuTScloud c4.5.5

*Credits: CFF of Topsec Alpha Team
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-03-18 CVE Reserved
  • 2021-06-24 CVE Published
  • 2024-09-16 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC
References (1)
URL Tag Source
URL Date SRC
URL Date SRC
URL Date SRC
https://www.qnap.com/zh-tw/security-advisory/qsa-21-28 2021-06-30
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Qnap
Search vendor "Qnap"
 Qts
Search vendor "Qnap" for product "Qts"
 < 4.3.3.1624
Search vendor "Qnap" for product "Qts" and version " < 4.3.3.1624"
-
Affected
Qnap
Search vendor "Qnap"
 Qts
Search vendor "Qnap" for product "Qts"
 >= 4.3.4 < 4.3.6.1663
Search vendor "Qnap" for product "Qts" and version " >= 4.3.4 < 4.3.6.1663"
-
Affected