Stack-Based Buffer Overflow in Tenda F1202 Router
CVE-2026-9430

8.7HIGH

Key Information:

Vendor

Tenda
Status
F1202
Vendor
CVE Published:
25 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9430?

A vulnerability exists in the Tenda F1202 router versions 1.2.0.20(408) resulting from improper handling of user inputs in the formGstDhcpSetSer function within the /goform/GstDhcpSetSerof file. This flaw allows a remote attacker to exploit a stack-based buffer overflow through manipulated arguments, potentially compromising the device's stability and integrity. Users are advised to secure their devices against unauthorized access in light of the publicly disclosed nature of this exploit.

Affected Version(s)

F1202 1.2.0.20(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-2026-9430 - Proof of Concept

References

https://vuldb.com/vuln/365411
vdb-entrytechnical-description
https://vuldb.com/vuln/365411/cti
signaturepermissions-required
https://vuldb.com/submit/813915
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

LtzHuster2 (VulDB User)
.