Stack-Based Buffer Overflow in Tenda F453 Router by Tenda
CVE-2026-3768

8.7HIGH

Key Information:

Vendor

Tenda
Status
F453
Vendor
CVE Published:
8 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3768?

A security vulnerability exists in the Tenda F453 router, specifically within the formWrlExtraSet function located in the /goform/WrlExtraSet file. An issue arises from improper handling of the GO argument, leading to a stack-based buffer overflow. This flaw allows for potential remote exploitation, posing a significant risk if left unaddressed. The vulnerability has been made public, increasing the likelihood of attackers leveraging it to compromise affected systems.

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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-2026-3768 - Proof of Concept

References

https://vuldb.com/?id.349746
vdb-entrytechnical-description
https://vuldb.com/?ctiid.349746
signaturepermissions-required
https://vuldb.com/?submit.768296
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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