CVE-2026-5993

CRITICAL

Totolink A7100RU CGI cstecgi.cgi setWiFiGuestCfg os command injection

Title source: cna

Description

A vulnerability was identified in Totolink A7100RU 7.4cu.2313_b20191024. This vulnerability affects the function setWiFiGuestCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument wifiOff leads to os command injection. The attack can be executed remotely. The exploit is publicly available and might be used.

References (5)

Core 5

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-356547 | Totolink A7100RU CGI cstecgi.cgi setWiFiGuestCfg os command injection

https://vuldb.com/vuln/356547

Signature, Permissions Required signature permissions-required

VDB-356547 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/356547/cti

Third Party Advisory third-party-advisory

Submit #792041 | Totolink A7100RU 7.4cu.2313_b20191024 Command Injection

https://vuldb.com/submit/792041

Exploit exploit

https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_165/README.md

View Exploit ZIP pw:eip

Product product

https://www.totolink.net/

Scores

CVSS v3 9.8

EPSS 0.0180

EPSS Percentile 75.6%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact total

Details

CWE

CWE-77 CWE-78

Status published

Products (1)

Totolink/A7100RU 7.4cu.2313_b20191024

Published Apr 10, 2026

Tracked Since Apr 10, 2026