OS Command Injection Vulnerability in Totolink A8000RU Web Management Interface
CVE-2026-9476

9.3CRITICAL

Key Information:

Vendor

Totolink
Status
A8000ru
Vendor
CVE Published:
25 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9476?

A serious vulnerability has been identified in the Totolink A8000RU model, specifically within the web management interface. This flaw allows remote attackers to exploit the 'setPasswordCfg' function found in the /cgi-bin/cstecgi.cgi file. By manipulating the 'admpass' argument, an attacker could execute arbitrary operating system commands. The risk is heightened as exploit code for this vulnerability is publicly available, making affected users susceptible to remote attacks.

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-2026-9476 - Proof of Concept

References

https://vuldb.com/vuln/365457
vdb-entrytechnical-description
https://vuldb.com/vuln/365457/cti
signaturepermissions-required
https://vuldb.com/submit/813459
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)
.