OS Command Injection Vulnerability in Totolink A8000RU by Totolink
CVE-2026-7203

9.3CRITICAL

Key Information:

Vendor

Totolink
Status
A8000ru
Vendor
CVE Published:
28 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7203?

A vulnerability has been identified in the Totolink A8000RU 7.1cu.643_b20200521, specifically within the setUrlFilterRules function found in the CGI Handler component. An attacker can manipulate the 'enable' argument, leading to OS command injection. This flaw allows remote exploitation, as the attack can be launched from afar. It is crucial for users and network administrators to be aware of this vulnerability and implement protective measures to safeguard against potential exploitation. Further details can be found in related references.

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-2026-7203 - Proof of Concept

References

https://vuldb.com/vuln/359803
vdb-entrytechnical-description
https://vuldb.com/vuln/359803/cti
signaturepermissions-required
https://vuldb.com/submit/801528
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

LtzHust (VulDB User)
.