Buffer Overflow Vulnerability in Tenda F453 Parameters Handler
CVE-2026-4553

8.7HIGH

Key Information:

Vendor

Tenda
Status
F453
Vendor
CVE Published:
22 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4553?

A stack-based buffer overflow vulnerability has been identified in the Tenda F453 device, specifically in the Parameters Handler within the function fromNatlimit. The vulnerability arises due to improper handling of argument manipulation for the 'page' parameter in the /goform/Natlimit file. An attacker could exploit this flaw remotely, potentially leading to unauthorized access or disruption of service. The information about this exploit is already publicly available, which increases the risk of attacks on affected installations.

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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-2026-4553 - Proof of Concept

References

https://vuldb.com/?id.352380
vdb-entrytechnical-description
https://vuldb.com/?ctiid.352380
signaturepermissions-required
https://vuldb.com/?submit.774931
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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