Command Injection Vulnerability in A7000R Router by Totolink
CVE-2026-1547

5.3MEDIUM

Key Information:

Vendor

Totolink
Status
A7000r
Vendor
CVE Published:
28 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-1547?

A vulnerability exists in the Totolink A7000R Router, specifically in the function setUnloadUserData located in /cgi-bin/cstecgi.cgi. This vulnerability allows an attacker to manipulate the argument plugin_name, leading to command injection capabilities. The exploitation of this vulnerability can be performed remotely, making it imperative for users to be aware of the potential risks and to apply necessary security measures.

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Affected Version(s)

A7000R 4.1cu.4154

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-2026-1547 - Proof of Concept

CVE-2026-1547 - Proof of Concept

References

https://vuldb.com/?id.343231
vdb-entrytechnical-description
https://vuldb.com/?ctiid.343231
signaturepermissions-required
https://vuldb.com/?submit.739713
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

xuanyu (VulDB User)
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