CVE-2021-27692
CRITICAL EXPLOITEDTendacn G1 Firmware - Memory Corruption
Title source: ruleExploitation Summary
CVE-2021-27692 has been observed exploited in the wild (reported by VulnCheck 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.
References (1)
Core 1
Core References
Various Sources x_refsource_misc
https://hackmd.io/%40aZYpdinUS2SD-yhAeHwOkw/ry-t4QfMu
Scores
CVSS v3
9.8
EPSS
0.0328
EPSS Percentile
86.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
VulnCheck KEV
2025-06-08
CWE
CWE-119
CWE-78
Status
published
Products (4)
tendacn/g1_firmware
15.11.0.16\(9024\)_cn
tendacn/g1_firmware
15.11.0.17\(9502\)_cn
tendacn/g3_firmware
15.11.0.16\(9024\)_cn
tendacn/g3_firmware
15.11.0.17\(9502\)_cn
Published
Apr 16, 2021
Tracked Since
Feb 18, 2026