OS Command Injection Vulnerability in Totolink A8000RU
CVE-2026-7152

9.3CRITICAL

Key Information:

Vendor

Totolink
Status
A8000ru
Vendor
CVE Published:
27 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7152?

An OS command injection vulnerability exists in the Totolink A8000RU router firmware version 7.1cu.643_b20200521. Specifically, the flaw lies in the 'setTelnetCfg' function within the '/cgi-bin/cstecgi.cgi' CGI Handler component. This vulnerability enables remote attackers to exploit the telnet_enabled argument, potentially executing arbitrary OS commands, leading to unauthorized access and control over the device. Publicly available exploit techniques exacerbate the risk, underscoring the need for prompt mitigation.

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-2026-7152 - Proof of Concept

References

https://vuldb.com/vuln/359751
vdb-entrytechnical-description
https://vuldb.com/vuln/359751/cti
signaturepermissions-required
https://vuldb.com/submit/801138
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)
.