Stack-Based Buffer Overflow in Tenda HG9 Samba Configuration Endpoint
CVE-2026-2906

8.7HIGH

Key Information:

Vendor

Tenda
Status
Hg9
Vendor
CVE Published:
22 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2906?

A security flaw exists in the Tenda HG9 300001138 affecting the Samba Configuration Endpoint found at /boaform/formSamba. This vulnerability allows an attacker to manipulate the sambaCap argument, leading to a stack-based buffer overflow condition. The exploitation of this vulnerability can be conducted remotely, thereby posing a significant risk if left unaddressed. Publicly available exploits for this vulnerability have been released, making it imperative for users to take immediate action to safeguard their systems.

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Affected Version(s)

HG9 300001138

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-2026-2906 - Proof of Concept

References

https://vuldb.com/?id.347215
vdb-entrytechnical-description
https://vuldb.com/?ctiid.347215
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https://vuldb.com/?submit.755193
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
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

LINXI666 (VulDB User)
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