CVE-2026-5676

HIGH

Totolink A8000R cstecgi.cgi setLanguageCfg missing authentication

Title source: cna

Description

A vulnerability was identified in Totolink A8000R 5.9c.681_B20180413. This issue affects the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument langType leads to missing authentication. The attack can be launched remotely. The exploit is publicly available and might be used.

References (5)

Core 5

Core References

Signature, Permissions Required signature permissions-required

VDB-355503 | CTI Indicators (IOB, IOC, IOA)

https://vuldb.com/vuln/355503/cti

Third Party Advisory third-party-advisory

Submit #792433 | Totolink A8000R V5.9c.681_B20180413 Improper Authentication

https://vuldb.com/submit/792433

Exploit exploit

https://github.com/skeetabc/CVE-TOTOLINK-A800R/blob/main/vuln1_auth_bypass.md

View Exploit ZIP pw:eip

Vdb Entry, Technical Description vdb-entry technical-description

VDB-355503 | Totolink A8000R cstecgi.cgi setLanguageCfg missing authentication

https://vuldb.com/vuln/355503

Product product

https://www.totolink.net/

Scores

CVSS v3 7.3

EPSS 0.0040

EPSS Percentile 32.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-287 CWE-306

Status published

Products (1)

Totolink/A8000R 5.9c.681_B20180413

Published Apr 06, 2026

Tracked Since Apr 07, 2026