CVE-2026-9455

CRITICAL

Totolink A8000RU Web Management cstecgi.cgi UploadOpenVpnCert os command injection

Title source: cna

Description

A vulnerability has been found in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function UploadOpenVpnCert of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument FileName leads to os command injection. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used.

References (5)

Core 5

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-365436 | Totolink A8000RU Web Management cstecgi.cgi UploadOpenVpnCert os command injection

https://vuldb.com/vuln/365436

Signature, Permissions Required signature permissions-required

VDB-365436 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/365436/cti

Third Party Advisory third-party-advisory

Submit #813449 | Totolink A8000RU 7.1cu.643_b20200521 Command Injection

https://vuldb.com/submit/813449

Exploit exploit

https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_342/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