CVE-2021-27692
published 2021-04-16CVE-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…
PriorityP180critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
ITWVulnCheck KEV
Exploited in the wild
EPSS
3.28%
86.9th percentile
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.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| tendacn | g1_firmware | — | — |
| tendacn | g1_firmware | — | — |
| tendacn | g3_firmware | — | — |
| tendacn | g3_firmware | — | — |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.010.0CRITICALAV:N/AC:L/Au:N/C:C/I:C/A:C
vulncheck9.8CRITICAL
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GHSA
GHSA-rxj2-g98j-wfhh: Command Injection in Tenda G1 and G3 routers with firmware versions v15
ghsa_unreviewed·2022-05-24
CVE-2021-27692 [CRITICAL] CWE-78 GHSA-rxj2-g98j-wfhh: Command Injection in Tenda G1 and G3 routers with firmware versions v15
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.
VulnCheck
Tenda g1_firmware Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
vulncheck·2021·CVSS 9.8
CVE-2021-27692 [CRITICAL] Tenda g1_firmware Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Tenda g1_firmware Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
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.
Affected: Tenda g1_firmware
Required Action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Exploitation References: https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2025-06-08&host_type=src&vulnerability=cve-2021-27692
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2021-04-16
Published
Exploited in the wild