OS Command Injection Vulnerability in Totolink CA750-PoE
CVE-2026-9533

5.3MEDIUM

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9533?

A vulnerability has been identified in the Totolink CA750-PoE, specifically within the recvUpgradeNewFw function in the cgi-bin/cstecgi.cgi file, part of the Setting Handler. This vulnerability allows for remote command injection through manipulation of the fwUrl and magicid parameters. Attackers can execute arbitrary commands on the device by sending specially crafted requests, potentially compromising the device's integrity and security. With the exploit now public, it is crucial for users to take immediate action to secure their 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-2026-9533 - Proof of Concept

References

https://vuldb.com/vuln/365560
vdb-entrytechnical-description
https://vuldb.com/vuln/365560/cti
signaturepermissions-required
https://vuldb.com/submit/813937
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)
.