CVE-2021-43711

CRITICAL EXPLOITED IN THE WILD

TOTOLINK EX200 V4.0.3c.7646_B20201211 - Command Injection

Title source: llm

Exploitation Summary

CVE-2021-43711 has been observed exploited in the wild (reported by VulnCheck KEV, InTheWild.io).

Description

The downloadFlile.cgi binary file in TOTOLINK EX200 V4.0.3c.7646_B20201211 has a command injection vulnerability when receiving GET parameters. The parameter name can be constructed for unauthenticated command execution.

References (1)

Core 1

Core References

Exploit, Third Party Advisory x_refsource_misc

https://github.com/doudoudedi/ToTolink_EX200_Cmmand_Execute/blob/main/ToTolink%20EX200%20Comand%20Injection2.md

View Exploit ZIP pw:eip

Scores

CVSS v3 9.8

EPSS 0.1999

EPSS Percentile 95.6%

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 2022-08-19

InTheWild.io 2022-08-19

CWE

CWE-77

Status published

Products (1)

totolink/ex200_firmware 4.0.3c.7646_b20201211

Published Jan 04, 2022

Tracked Since Feb 18, 2026