Buffer Overflow Vulnerability in Port Forwarding Wizard by Port Forwarding
CVE-2020-37025

8.4HIGH

Key Information:

Vendor

Iforwarder And Upredsun Technologies, Llc.

Status
Port Forwarding Wizard
Vendor
CVE Published:
30 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-37025?

The Port Forwarding Wizard version 4.8.0 suffers from a buffer overflow vulnerability that can be exploited by local attackers. By sending a crafted long request via the Register feature, an attacker may manipulate the application's memory. This could lead to the execution of arbitrary code, allowing the attacker to overwrite Structured Exception Handler (SEH) handlers and potentially launch shellcode execution on affected Windows systems.

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Affected Version(s)

Port Forwarding Wizard 4.8.0

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-2020-37025 - Proof of Concept

References

https://www.exploit-db.com/exploits/48695
exploit
http://www.port-forwarding.net/
product
https://www.vulncheck.com/advisories/port-forwarding-wiza...
third-party-advisory

CVSS V4

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Sarang Tumne
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