Critical severity · published Apr 16, 2021
CVE-2021-27692
Command Injection in Tenda G1 and G3 routers with firmware versions v15.11.0.17(9502)_CN or v15.11.0.16(9024)_CN allows remote attackers to execute arbitrary OS commands via a…
9.8
CVSS
3.2%
EPSS
No
On KEV
Description
Command Injection in Tenda G1 and G3 routers with firmware versions v15.11.0.17(9502)_CN or v15.11.0.16(9024)_CN allows remote attackers to execute arbitrary OS commands via a crafted "action/umountUSBPartition" request. This occurs because the "formSetUSBPartitionUmount" function executes the "doSystemCmd" function with untrusted input.
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)3.2% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GF
G1 Firmware · Tendacn
15.11.0.16(9024)_cn; 15.11.0.17(9502)_cn · source: NVD
GF
G3 Firmware · Tendacn
15.11.0.16(9024)_cn; 15.11.0.17(9502)_cn · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27692
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-27692
hackmd.io
https://hackmd.io/%40aZYpdinUS2SD-yhAeHwOkw/ry-t4QfMu
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