CVE-2026-9386

CRITICAL

Totolink A8000RU Web Management cstecgi.cgi setLanguageCfg os command injection

Title source: cna

Description

A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument lang 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-365349 | Totolink A8000RU Web Management cstecgi.cgi setLanguageCfg os command injection

https://vuldb.com/vuln/365349

Signature, Permissions Required signature permissions-required

VDB-365349 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/365349/cti

Third Party Advisory third-party-advisory

Submit #813432 | Totolink A8000RU 7.1cu.643_b20200521 Command Injection

https://vuldb.com/submit/813432

Exploit exploit

https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_333/README.md

View Exploit ZIP pw:eip

Product product

https://www.totolink.net/

Scores

CVSS v3 9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

Details

CWE

CWE-77 CWE-78

Status published

Products (1)

Totolink/A8000RU 7.1cu.643_b20200521

Published May 24, 2026

Tracked Since May 24, 2026