Stack-Based Buffer Overflow in Tenda FH1202 Router
CVE-2026-3811

8.7HIGH

Key Information:

Vendor

Tenda
Status
Fh1202
Vendor
CVE Published:
9 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3811?

A stack-based buffer overflow vulnerability exists in the Tenda FH1202 router, specifically within the P2pListFilter function. This issue is triggered by manipulating the 'page' argument in the /goform/P2pListFilter file, which could allow remote attackers to execute their own code leading to unauthorized access or disruption. Given the public disclosure of the exploit, users are urged to implement appropriate security measures to mitigate potential risks.

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Affected Version(s)

FH1202 1.2.0.14(408)

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-2026-3811 - Proof of Concept

References

https://vuldb.com/?id.349777
vdb-entrytechnical-description
https://vuldb.com/?ctiid.349777
signaturepermissions-required
https://vuldb.com/?submit.769041
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

m202572177 (VulDB User)
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