Is Command Injection affected by CVE-2026-6113?

Totolik A7100RU routers (version 7.4cu.2313_b20191024 and potentially earlier) contain a critical OS command injection vulnerability that allows unauthenticated attackers to remotely execute arbitrary commands, directly compromising router integrity and any downstream network traffic.

CVE-2026-6113

EUVD-2026-21702 HIGH

2026-04-12 VulDB

8.9

CVSS 4.0

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

Lifecycle Timeline

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

Description

A security vulnerability has been detected in Totolink A7100RU 7.4cu.2313_b20191024. Affected by this vulnerability is the function setTtyServiceCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument ttyEnable leads to os command injection. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.

Analysis

OS command injection in Totolink A7100RU router version 7.4cu.2313_b20191024 allows unauthenticated remote attackers to execute arbitrary system commands via the ttyEnable parameter in the setTtyServiceCfg function of /cgi-bin/cstecgi.cgi. Public exploit code is available (GitHub POC published). …

Remediation

Within 24 hours: Identify and inventory all Totolik A7100RU devices on your network (check management interfaces and DHCP logs for the MAC prefix). Within 7 days: Contact Totolik support to confirm patch availability status and request urgent firmware updates; simultaneously implement network segmentation to isolate affected routers from sensitive systems and restrict administrative access. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.9

CVSS: +44

POC: +20

CVE-2026-6113 vulnerability details – vuln.today

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CVE-2026-6113

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CVE-2026-6113

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External POC / Exploit Code