RCE in Tendacn G1
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 crafted "action/umountUSBPartition" request. This occurs because the "formSetUSBPartitionUmount" function executes the "doSystemCmd" function with untrusted input.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.032 (87.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
- Tendacn G1
- Tendacn G1 Firmware — versions 15.11.0.17\(9502\)_cn, 15.11.0.16(9024)_cn, 15.11.0.16\(9024\)_cn
- Tendacn G3
- Tendacn G3 Firmware — versions 15.11.0.17\(9502\)_cn, 15.11.0.16(9024)_cn, 15.11.0.16\(9024\)_cn
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2021-27692?
- CVE-2021-27692 is a critical-severity vulnerability in Tendacn G1, classified under OS Command Injection. CVSS score: 9.8/10. Published 2021-04-16.
- How severe is CVE-2021-27692?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-27692 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.