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Totolink A8000R CVE-2026-5676

| EUVD-2026-19434 MEDIUM
Missing Authentication for Critical Function (CWE-306)
2026-04-06 VulDB
Authentication Bypass
5.5
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

5
CVSS changed
Apr 29, 2026 - 01:11 NVD
6.9 (MEDIUM) 5.5 (MEDIUM)
PoC Detected
Apr 07, 2026 - 13:20 vuln.today
Public exploit code
EUVD ID Assigned
Apr 06, 2026 - 19:00 euvd
EUVD-2026-19434
Analysis Generated
Apr 06, 2026 - 19:00 vuln.today
CVE Published
Apr 06, 2026 - 18:15 nvd
MEDIUM 6.9

DescriptionNVD

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.

AnalysisAI

Authentication bypass in Totolink A8000R 5.9c.681_B20180413 allows remote attackers to manipulate the langType parameter in the setLanguageCfg function at /cgi-bin/cstecgi.cgi to bypass authentication controls without credentials. This unauthenticated remote vulnerability has publicly available exploit code and poses a confirmed risk to exposed router management interfaces.

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CVE-2026-5676 vulnerability details – vuln.today
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