Buffer Overflow in Port Forwarding Wizard 4.8.0 Enables Code Execution

Publication date: 2026-01-30

Last updated on: 2026-01-30

Assigner: VulnCheck

Description

Port Forwarding Wizard 4.8.0 contains a buffer overflow vulnerability that allows local attackers to execute arbitrary code through a long request in the Register feature. Attackers can craft a malicious payload with an egg tag and overwrite SEH handlers to potentially execute shellcode on vulnerable Windows systems.

CVSS Scores

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Meta Information

Published

2026-01-30

Last Modified

2026-01-30

Generated

2026-07-06

AI Q&A

2026-01-31

EPSS Evaluated

2026-07-05

NVD

CVE-2020-37025

Affected Vendors & Products

Vendor	Product	Version / Range
port_forwarding_wizard	port_forwarding_wizard	4.8.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-120	The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.

Attack-Flow Graph

Executive Summary

Port Forwarding Wizard 4.8.0 has a buffer overflow vulnerability in its Register feature. This flaw allows local attackers to send an overly long request containing a specially crafted payload with an egg tag, which can overwrite Structured Exception Handler (SEH) pointers. By doing so, attackers can execute arbitrary code, such as shellcode, on the affected Windows system.

Impact Analysis

This vulnerability can allow a local attacker to execute arbitrary code on your Windows system, potentially leading to full system compromise. This could result in unauthorized access, data theft, system instability, or further malware installation.

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