OS Command Injection Vulnerability in Totolink A8000RU Router
CVE-2026-7153

9.3CRITICAL

Key Information:

Vendor

Totolink
Status
A8000ru
Vendor
CVE Published:
27 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7153?

A security flaw has been identified in the Totolink A8000RU router, specifically within the CGI Handler component. The vulnerability arises from improper handling of the 'sys_info' argument in the 'setMiniuiHomeInfoShow' function of the /cgi-bin/cstecgi.cgi file. This oversight allows an attacker to perform remote OS command injection, potentially compromising the device's security. The exploit for this vulnerability has been publicly disclosed, heightening the risk of unauthorized access and manipulation of the affected system.

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-2026-7153 - Proof of Concept

References

https://vuldb.com/vuln/359752
vdb-entrytechnical-description
https://vuldb.com/vuln/359752/cti
signaturepermissions-required
https://vuldb.com/submit/801139
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)
.