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Totolink A8000RU EUVD-2026-26016

| CVE-2026-7243 HIGH
Command Injection (CWE-77)
2026-04-28 cna@vuldb.com
Command Injection
8.9
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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
Re-analysis Queued
Apr 28, 2026 - 20:38 vuln.today
cvss_changed
Analysis Generated
Apr 28, 2026 - 09:31 vuln.today
EUVD ID Assigned
Apr 28, 2026 - 09:22 euvd
EUVD-2026-26016
Analysis Generated
Apr 28, 2026 - 09:22 vuln.today
CVE Published
Apr 28, 2026 - 09:16 nvd
HIGH 8.9

DescriptionNVD

A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setRadvdCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument maxRtrAdvInterval leads to os command injection. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

AnalysisAI

Remote unauthenticated command injection in Totolink A8000RU 7.1cu.643_b20200521 allows attackers to execute arbitrary OS commands via the maxRtrAdvInterval parameter in the setRadvdCfg function of /cgi-bin/cstecgi.cgi. Public exploit code exists per VulDB submission, enabling immediate weaponization against exposed devices. …

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RemediationAI

Within 24 hours: Identify and inventory all Totolik A8000RU routers in production, prioritizing internet-facing instances; restrict network access to management interfaces via firewall rules. Within 7 days: Contact Totolink support to confirm patch availability status for version 7.1cu.643_b20200521 and evaluate replacement or upgrade paths; consider deploying these devices only on segmented networks with strict access controls. …

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EUVD-2026-26016 vulnerability details – vuln.today
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