Command Injection Vulnerability in Totolink A8000RU by Totolink
CVE-2026-7123

9.3CRITICAL

Key Information:

Vendor

Totolink
Status
A8000ru
Vendor
CVE Published:
27 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7123?

A security flaw in the Totolink A8000RU, specifically in the function setIptvCfg of the cgi-bin/cstecgi.cgi file, allows for OS command injection. This vulnerability can be exploited remotely by manipulating the argument in setIptvCfg, potentially leading to unauthorized access and command execution on the affected device. As the exploit has been publicly disclosed, it is crucial for users to implement security measures immediately to mitigate potential threats.

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-2026-7123 - Proof of Concept

References

https://vuldb.com/vuln/359722
vdb-entrytechnical-description
https://vuldb.com/vuln/359722/cti
signaturepermissions-required
https://vuldb.com/submit/800995
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)
.