OS Command Injection in Totolink CA750-PoE Product by Totolink
CVE-2026-9514

5.3MEDIUM

Key Information:

Vendor

Totolink
Status
Ca750-poe
Vendor
CVE Published:
25 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9514?

A security vulnerability has been identified in the Totolink CA750-PoE router version 6.2c.510, specifically within the setNetworkDiag function located in the /cgi-bin/cstecgi.cgi file. This vulnerability arises due to improper handling of inputs related to network diagnostics, allowing an attacker to manipulate parameters such as NetDiagHost, NetDiagPingNum, NetDiagPingSize, NetDiagPingTimeOut, and NetDiagTracertHop. As a result, it enables the execution of arbitrary operating system commands remotely. Public disclosure of the exploit has been noted, escalating the risk for affected devices.

Affected Version(s)

CA750-PoE 6.2c.510

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-2026-9514 - Proof of Concept

References

https://vuldb.com/vuln/365514
vdb-entrytechnical-description
https://vuldb.com/vuln/365514/cti
signaturepermissions-required
https://vuldb.com/submit/813926
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

Buoy_yes (VulDB User)
.