Command Injection Flaw in Totolink A8000RU Web Management Interface
CVE-2026-9406

9.3CRITICAL

Key Information:

Vendor

Totolink
Status
A8000ru
Vendor
CVE Published:
24 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9406?

A vulnerability has been discovered in the Totolink A8000RU Web Management Interface, specifically in the function setRemoteCfg of the /cgi-bin/cstecgi.cgi file. This weakness allows an attacker to manipulate the 'enable' argument, leading to potential OS command injection. The nature of this flaw means that it can be exploited remotely, posing a significant risk to users. Given that the details of the exploit have been publicly released, immediate attention to patching and securing affected systems is critical to mitigate risks associated with this vulnerability.

Affected Version(s)

A8000RU 7.1cu.643_b20200521

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-2026-9406 - Proof of Concept

References

https://vuldb.com/vuln/365387
vdb-entrytechnical-description
https://vuldb.com/vuln/365387/cti
signaturepermissions-required
https://vuldb.com/submit/813441
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)
.