CVE-2026-6138

CRITICAL

Totolink A7100RU CGI cstecgi.cgi setAccessDeviceCfg os command injection

Title source: cna

Description

A flaw has been found in Totolink A7100RU 7.4cu.2313_b20191024. The impacted element is the function setAccessDeviceCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. This manipulation of the argument mac causes os command injection. The attack can be initiated remotely. The exploit has been published and may be used.

References (5)

[Vdb Entry, Technical Description] https://vuldb.com/vuln/357002

[Signature, Permissions Required] https://vuldb.com/vuln/357002/cti

[Third Party Advisory] https://vuldb.com/submit/792980

[Exploit] https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_191/README.md

View Exploit ZIP pw:eip

[Product] https://www.totolink.net/

Scores

CVSS v3 9.8

EPSS 0.0125

EPSS Percentile 79.4%

Attack Vector NETWORK

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

Details

CWE

CWE-77 CWE-78

Status published

Products (1)

Totolink/A7100RU 7.4cu.2313_b20191024

Published Apr 13, 2026

Tracked Since Apr 13, 2026