CVE-2026-5851

CRITICAL

Totolink A7100RU CGI cstecgi.cgi setUPnPCfg os command injection

Title source: cna

Description

A security flaw has been discovered in Totolink A7100RU 7.4cu.2313_b20191024. This impacts the function setUPnPCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument enable results in os command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

References (5)

[Vdb Entry, Technical Description] https://vuldb.com/vuln/356377

[Signature, Permissions Required] https://vuldb.com/vuln/356377/cti

[Third Party Advisory] https://vuldb.com/submit/791271

[Exploit] https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_157/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 09, 2026

Tracked Since Apr 09, 2026