OS Command Injection Vulnerability in Totolink A8000RU by Totolink
CVE-2026-7137

9.3CRITICAL

Key Information:

Vendor

Totolink
Status
A8000ru
Vendor
CVE Published:
27 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7137?

A security vulnerability has been identified in Totolink A8000RU routers, specifically in the setStorageCfg function of the /cgi-bin/cstecgi.cgi component. This issue arises from improper handling of the sambaEnabled argument, which could allow an attacker to execute arbitrary OS commands remotely. Given the public disclosure of this exploit, it poses a significant risk to users, emphasizing the need for immediate attention and remediation.

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-2026-7137 - Proof of Concept

References

https://vuldb.com/vuln/359736
vdb-entrytechnical-description
https://vuldb.com/vuln/359736/cti
signaturepermissions-required
https://vuldb.com/submit/801008
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)
.