OS Command Injection Vulnerability in Totolink Router Firmware
CVE-2026-6154

9.3CRITICAL

Key Information:

Vendor

Totolink
Status
A7100ru
Vendor
CVE Published:
13 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6154?

A security vulnerability exists in the Totolink A7100RU firmware version 7.4cu.2313_b20191024, specifically within the CGI component's setWizardCfg function. This flaw allows for remote exploitation via OS command injection through manipulated arguments, which could lead to unauthorized command execution on the affected device. The issue has been publicly disclosed and poses a significant risk to users, necessitating immediate awareness and actions to mitigate potential attacks.

Affected Version(s)

A7100RU 7.4cu.2313_b20191024

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-6154 - Proof of Concept

References

https://vuldb.com/vuln/357034
vdb-entrytechnical-description
https://vuldb.com/vuln/357034/cti
signaturepermissions-required
https://vuldb.com/submit/792990
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LtzHuster (VulDB User)
.