CVE-2021-43711 — CRITICAL (9.8)

Vulnerability 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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Totolink	Ex200 Firmware	4.0.3c.7646_b20201211
Totolink	Ex200	-

Related Weaknesses (CWE)

CWE-77

References

https://github.com/doudoudedi/ToTolink_EX200_Cmmand_Execute/blob/main/ToTolink%2ExploitThird Party Advisory
https://github.com/doudoudedi/ToTolink_EX200_Cmmand_Execute/blob/main/ToTolink%2ExploitThird Party Advisory

FAQ

What is CVE-2021-43711?

CVE-2021-43711 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 unauthenticate...

How severe is CVE-2021-43711?

CVE-2021-43711 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-43711?

Check the references section above for vendor advisories and patch information. Affected products include: Totolink Ex200 Firmware, Totolink Ex200.