Critical severity · published Jun 24, 2021
CVE-2021-28800
A command injection vulnerability has been reported to affect QNAP NAS running legacy versions of QTS
9.8
CVSS
1.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 73% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QT
Qts · Qnap
before 4.3.3.1624; 4.3.4 before 4.3.6.1663 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-28800
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-28800
Vendor Advisory
https://www.qnap.com/zh-tw/security-advisory/qsa-21-28
More from Qts
9.8
CVE-2020-2509
Command Injection Vulnerability in QTS and QuTS hero
9.8
CVE-2018-19949
QNAP NAS File Station Command Injection Vulnerability
9.8
CVE-2019-7193
QNAP QTS Improper Input Validation Vulnerability
9.8
CVE-2014-7169
GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Vulnerability
9.8
CVE-2014-6271
GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Vulnerability