OS Command Injection Vulnerability in Totolink A8000RU Product
CVE-2026-7154

9.3CRITICAL

Key Information:

Vendor

Totolink
Status
A8000ru
Vendor
CVE Published:
27 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7154?

A security vulnerability has been identified in the Totolink A8000RU version 7.1cu.643_b20200521, particularly in the functionality of the CGI Handler. This weakness arises from the setAdvancedInfoShow method, where an improperly handled input parameter, tty_server, allows an attacker to conduct remote OS command injection. The exploitability of this flaw has been made public, making it essential for users to take immediate action to safeguard their devices from potential 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-2026-7154 - Proof of Concept

References

https://vuldb.com/vuln/359753
vdb-entrytechnical-description
https://vuldb.com/vuln/359753/cti
signaturepermissions-required
https://vuldb.com/submit/801140
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

LtzHuster2 (VulDB User)
.