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Totolink A7100RU CVE-2026-6112

| EUVD-2026-21700 HIGH
OS Command Injection (CWE-78)
2026-04-12 VulDB
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

8
Re-analysis Queued
Apr 27, 2026 - 19:07 vuln.today
cvss_changed
PoC Detected
Apr 27, 2026 - 19:05 vuln.today
Public exploit code
Severity Changed
Apr 12, 2026 - 04:22 NVD
CRITICAL HIGH
CVSS changed
Apr 12, 2026 - 04:22 NVD
9.8 (CRITICAL) 8.9 (HIGH)
Analysis Generated
Apr 12, 2026 - 04:05 vuln.today
EUVD ID Assigned
Apr 12, 2026 - 04:00 euvd
EUVD-2026-21700
Analysis Generated
Apr 12, 2026 - 04:00 vuln.today
CVE Published
Apr 12, 2026 - 02:45 nvd
HIGH 8.9

DescriptionNVD

A weakness has been identified in Totolink A7100RU 7.4cu.2313_b20191024. Affected is the function setRadvdCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. This manipulation of the argument maxRtrAdvInterval causes os command injection. The attack can be initiated 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 version 7.4cu.2313_b20191024 allows unauthenticated remote attackers to execute arbitrary system commands via the CGI interface. The setRadvdCfg function in /cgi-bin/cstecgi.cgi fails to sanitize the maxRtrAdvInterval parameter, enabling command injection through crafted HTTP requests. …

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RemediationAI

Within 24 hours: Identify all Totolik A7100RU devices in your environment (check inventory, IP scans, DHCP logs). Within 7 days: Contact Totolik support for firmware availability and evaluate emergency patching procedures; if devices are internet-exposed, immediately isolate them or disable remote management access. …

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CVE-2026-6112 vulnerability details – vuln.today
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