CVE-2026-9458

CRITICAL

Totolink A8000RU Web Management cstecgi.cgi setWanCfg os command injection

Title source: cna

Description

A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. The impacted element is the function setWanCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument enabled 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-365439 | Totolink A8000RU Web Management cstecgi.cgi setWanCfg os command injection

https://vuldb.com/vuln/365439

Signature, Permissions Required signature permissions-required

VDB-365439 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/365439/cti

Third Party Advisory third-party-advisory

Submit #813457 | Totolink A8000RU 7.1cu.643_b20200521 Command Injection

https://vuldb.com/submit/813457

Exploit exploit

https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_346/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