CVE-2026-5975

CRITICAL

Totolink A7100RU CGI cstecgi.cgi setDmzCfg os command injection

Title source: cna

Description

A vulnerability was identified in Totolink A7100RU 7.4cu.2313_b20191024. The impacted element is the function setDmzCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument wanIdx leads to os command injection. The attack may be performed from remote. The exploit is publicly available and might be used.

References (5)

Core 5

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-356529 | Totolink A7100RU CGI cstecgi.cgi setDmzCfg os command injection

https://vuldb.com/vuln/356529

Signature, Permissions Required signature permissions-required

VDB-356529 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/356529/cti

Third Party Advisory third-party-advisory

Submit #791821 | Totolink A7100RU 7.4cu.2313_b20191024 Command Injection

https://vuldb.com/submit/791821

Exploit exploit

https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_161/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 none

Automatable yes

Technical Impact total

Details

CWE

CWE-77 CWE-78

Status published

Products (1)

Totolink/A7100RU 7.4cu.2313_b20191024

Published Apr 09, 2026

Tracked Since Apr 10, 2026