OS Command Injection Vulnerability in Tenda AC6 Router
CVE-2026-8259

5.1MEDIUM

Key Information:

Vendor

Tenda
Status
Ac6
Vendor
CVE Published:
11 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8259?

A vulnerability has been discovered in the Tenda AC6 router affecting the HTTP daemon component, specifically within the '/goform/telnet' function. This issue arises from improper handling of the 'lan.ip' argument, which can lead to OS command injection. Attackers can exploit this vulnerability remotely, allowing them to execute arbitrary commands on the affected device. The exploit has been made public, heightening the risk of attacks against systems that use this firmware version.

Affected Version(s)

AC6 2.0

AC6 15.03.06.23

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-2026-8259 - Proof of Concept

References

https://vuldb.com/vuln/362556
vdb-entrytechnical-description
https://vuldb.com/vuln/362556/cti
signaturepermissions-required
https://vuldb.com/submit/809877
third-party-advisory

CVSS V4

Score:
5.1
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

ST4R (VulDB User)
.