CVE-2026-6156

CRITICAL

Totolink A7100RU CGI cstecgi.cgi setIpQosRules os command injection

Title source: cna

Description

A security vulnerability has been detected in Totolink A7100RU 7.4cu.2313_b20191024. This affects the function setIpQosRules of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument Comment leads to os command injection. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used.

References (5)

[Vdb Entry, Technical Description] https://vuldb.com/vuln/357036

[Signature, Permissions Required] https://vuldb.com/vuln/357036/cti

[Third Party Advisory] https://vuldb.com/submit/793681

[Exploit] https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_197/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