CVE-2021-45986: tendacn g1_firmware OS Command Injection

Vulnerability summary

CVE-2021-45986 is a critical (CVSS 9.8) OS Command Injection vulnerability in tendacn g1_firmware. EPSS estimates a 1.87% chance of exploitation in the next 30 days, higher than 79.1% of scored vulnerabilities.

Timeline

1. 04-02-2022
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a command injection vulnerability in the function formSetUSBShareInfo. This vulnerability allows attackers to execute arbitrary commands via the usbOrdinaryUserName parameter.

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.