Buffer Overflow Vulnerability in Tenda F453 by Tenda
CVE-2026-3399

8.7HIGH

Key Information:

Vendor

Tenda
Status
F453
Vendor
CVE Published:
1 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3399?

A buffer overflow vulnerability has been detected in the Tenda F453 1.0.0.3 device's HTTP server component. The flaw is rooted in the 'fromGstDhcpSetSer' function responsible for processing DHCP settings, specifically the manipulation of the 'dips' argument within the '/goform/GstDhcpSetSer' file. This vulnerability can be exploited remotely, allowing attackers to execute malicious exploits that may manipulate vulnerable buffer sizes, potentially leading to unauthorized access or control. Proof-of-concept exploits are already available, highlighting the urgency for users to address this security issue.

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Affected Version(s)

F453 1.0.0.3

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-2026-3399 - Proof of Concept

References

https://vuldb.com/?id.348294
vdb-entrytechnical-description
https://vuldb.com/?ctiid.348294
signaturepermissions-required
https://vuldb.com/?submit.759631
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

LtzHust2 (VulDB User)
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