CVE-2026-5854

CRITICAL

Totolink A7100RU CGI cstecgi.cgi setWiFiEasyCfg os command injection

Title source: cna

Description

A vulnerability was detected in Totolink A7100RU 7.4cu.2313_b20191024. Affected by this issue is the function setWiFiEasyCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument merge results in os command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used.

References (5)

Core 5

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-356380 | Totolink A7100RU CGI cstecgi.cgi setWiFiEasyCfg os command injection

https://vuldb.com/vuln/356380

Signature, Permissions Required signature permissions-required

VDB-356380 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/356380/cti

Third Party Advisory third-party-advisory

Submit #791276 | Totolink A7100RU 7.4cu.2313_b20191024 Command Injection

https://vuldb.com/submit/791276

Exploit exploit

https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_160/README.md

View Exploit ZIP pw:eip

Product product

https://www.totolink.net/

Scores

CVSS v3 9.8

EPSS 0.1755

EPSS Percentile 96.7%

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 09, 2026

Tracked Since Apr 09, 2026