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Totolink A7100RU EUVD-2026-21319

| CVE-2026-6027 HIGH
OS Command Injection (CWE-78)
2026-04-10 VulDB GHSA-w3qf-xc88-m8c9
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 27, 2026 - 19:07 vuln.today
cvss_changed
PoC Detected
Apr 10, 2026 - 07:16 vuln.today
Public exploit code
EUVD ID Assigned
Apr 10, 2026 - 06:15 euvd
EUVD-2026-21319
Analysis Generated
Apr 10, 2026 - 06:15 vuln.today
CVE Published
Apr 10, 2026 - 06:00 nvd
HIGH 8.9

DescriptionNVD

A weakness has been identified in Totolink A7100RU 7.4cu.2313_b20191024. This issue affects the function setUrlFilterRules of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Executing a manipulation of the argument enable can lead to os command injection. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.

AnalysisAI

OS command injection in Totolink A7100RU router firmware 7.4cu.2313_b20191024 enables unauthenticated remote attackers to execute arbitrary system commands via the 'enable' parameter in the setUrlFilterRules function of /cgi-bin/cstecgi.cgi. Exploitation requires no user interaction, granting complete device compromise with potential for lateral network movement. …

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RemediationAI

Within 24 hours: Identify all Totolik A7100RU devices in inventory and isolate affected units from production networks if running firmware 7.4cu.2313_b20191024 or earlier; document current firmware versions across the deployment. Within 7 days: Contact Totolik support to confirm patch availability timeline and escalate if unavailable; evaluate replacement hardware from vendors with active security support. …

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EUVD-2026-21319 vulnerability details – vuln.today
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