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CVE-2021-43711

The downloadFlile.cgi binary file in TOTOLINK EX200 V4.0.3c.7646_B20201211 has a command injection vulnerability when receiving GET parameters. The...

Basic Information

CVE State: PUBLISHED
Reserved Date: November 15, 2021
Published Date: January 04, 2022
Last Updated: August 04, 2024
Vendor: TOTOLINK
Product: EX200
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.
Tags

CVSS Scores

CVSS v3.1

9.8 - CRITICAL

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

CVSS v2.0

7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS Score

Score: 15.40% (Percentile: 94.29%) as of 2025-06-14

Exploit Status

Exploited in the Wild: Yes (2025-06-03 00:00:00 UTC) Source

References

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

Known Exploited Vulnerability Information

Source	Added Date
The Shadowserver (via CIRCL)	2025-06-04 12:00:23 UTC

Timeline

CVE ID Reserved

November 15, 2021
CVE Published to Public

January 04, 2022
Added to KEVIntel

June 04, 2025