CVE-2026-9456

CRITICAL

Totolink A8000RU Web Management cstecgi.cgi setOpenVpnCfg os command injection

Title source: cna

Description

A vulnerability was found in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function setOpenVpnCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument enabled results in os command injection. The attack can be executed remotely. The exploit has been made public and could be used.

References (5)

Core 5

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-365437 | Totolink A8000RU Web Management cstecgi.cgi setOpenVpnCfg os command injection

https://vuldb.com/vuln/365437

Signature, Permissions Required signature permissions-required

VDB-365437 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/365437/cti

Third Party Advisory third-party-advisory

Submit #813452 | Totolink A8000RU 7.1cu.643_b20200521 Command Injection

https://vuldb.com/submit/813452

Exploit exploit

https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_344/README.md

View Exploit ZIP pw:eip

Product product

https://www.totolink.net/

Scores

CVSS v3 9.8

EPSS 0.0214

EPSS Percentile 79.5%

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 May 25, 2026

Tracked Since May 25, 2026