Stack-based Buffer Overflow in Tenda F453 Router
CVE-2026-3732

8.7HIGH

Key Information:

Vendor

Tenda
Status
F453
Vendor
CVE Published:
8 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3732?

A security vulnerability has been identified in the Tenda F453 router, specifically in version 1.0.0.3. This issue arises from the strcpy function in the /goform/exeCommand file, where improper handling of the cmdinput argument can lead to a stack-based buffer overflow. This vulnerability allows attackers to remotely exploit the router, leveraging publicly disclosed methods to execute harmful commands. Users of Tenda F453 should take immediate actions to apply available security patches and restrict access to the vulnerable functions.

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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-2026-3732 - Proof of Concept

References

https://vuldb.com/?id.349710
vdb-entrytechnical-description
https://vuldb.com/?ctiid.349710
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https://vuldb.com/?submit.767222
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

LtzHust (VulDB User)
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