Stack-Based Buffer Overflow in Tenda F453 Router
CVE-2026-3769

8.7HIGH

Key Information:

Vendor

Tenda
Status
F453
Vendor
CVE Published:
8 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3769?

A stack-based buffer overflow vulnerability exists in the Tenda F453 Router, specifically within the WrlclientSet function located in the /goform/WrlclientSet file. This vulnerability can be exploited remotely by manipulating the GO argument, leading to potential unauthorized access and execution of harmful actions. The exploit has been publicly disclosed, heightening the risk for devices running this version.

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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-2026-3769 - Proof of Concept

References

https://vuldb.com/?id.349747
vdb-entrytechnical-description
https://vuldb.com/?ctiid.349747
signaturepermissions-required
https://vuldb.com/?submit.768297
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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