Command Injection Vulnerability in Totolink A8000RU Router
CVE-2026-7037

9.3CRITICAL

Key Information:

Vendor

Totolink
Status
A8000ru
Vendor
CVE Published:
26 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7037?

A security flaw in the Totolink A8000RU router, specifically in the CGI Handler component, allows for remote command injection. This vulnerability is present in the function setVpnPassCfg of the cgi-bin/cstecgi.cgi file and is triggered by manipulating the pptpPassThru argument. An attacker can exploit this flaw from a remote location, potentially compromising the device's integrity. The exploit has been publicly released, highlighting the urgency for users to apply necessary patches and mitigate risks associated with unauthorized access.

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-2026-7037 - Proof of Concept

References

https://vuldb.com/vuln/359617
vdb-entrytechnical-description
https://vuldb.com/vuln/359617/cti
signaturepermissions-required
https://vuldb.com/submit/798484
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

LtzHuster (VulDB User)
.