CVE-2026-7244

CRITICAL

Totolink A8000RU CGI cstecgi.cgi setWiFiEasyGuestCfg os command injection

Title source: cna

Description

A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. The impacted element is the function setWiFiEasyGuestCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument merge results in os command injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.

References (5)

Core 5

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-359851 | Totolink A8000RU CGI cstecgi.cgi setWiFiEasyGuestCfg os command injection

https://vuldb.com/vuln/359851

Signature, Permissions Required signature permissions-required

VDB-359851 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/359851/cti

Third Party Advisory third-party-advisory

Submit #803267 | Totolink A8000RU 7.1cu.643_b20200521 Command Injection

https://vuldb.com/submit/803267

Exploit exploit

https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_328/README.md

View Exploit ZIP pw:eip

Product product

https://www.totolink.net/

Scores

CVSS v3 9.8

EPSS 0.0242

EPSS Percentile 82.0%

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/A8000RU 7.1cu.643_b20200521

Published Apr 28, 2026

Tracked Since Apr 28, 2026