Critical severity · published Apr 16, 2021
CVE-2021-27691
Command Injection in Tenda G0 routers with firmware versions v15.11.0.6(9039)_CN and v15.11.0.5(5876)_CN , and Tenda G1 and G3 routers with firmware versions v15.11.0.17(9502)_CN…
9.8
CVSS
25.4%
EPSS
No
On KEV
Description
Command Injection in Tenda G0 routers with firmware versions v15.11.0.6(9039)_CN and v15.11.0.5(5876)_CN , and 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/setDebugCfg request. This occurs because the "formSetDebugCfg" function executes glibc's system 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)25.4% · higher than 98% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GF
G0 Firmware · Tendacn
15.11.0.5(5876)_cn; 15.11.0.6(9039)_cn · source: NVD
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