Command Injection Vulnerability in Totolink A7100RU Router
CVE-2026-6112

9.3CRITICAL

Key Information:

Vendor

Totolink
Status
A7100ru
Vendor
CVE Published:
12 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6112?

A security vulnerability has been discovered in the Totolink A7100RU router, specifically in the 'setRadvdCfg' function of the CGI Handler component. This vulnerability allows remote attackers to inject arbitrary OS commands through the manipulation of the 'maxRtrAdvInterval' argument. The exposure of this flaw can lead to unauthorized access and control of the affected system, increasing the risk of further exploitation. Publicly available exploits heighten the urgency for administrators to implement necessary security measures.

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-2026-6112 - Proof of Concept

References

https://vuldb.com/vuln/356972
vdb-entrytechnical-description
https://vuldb.com/vuln/356972/cti
signaturepermissions-required
https://vuldb.com/submit/792245
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

LtzHust2 (VulDB User)
.