CVE-2020-37025 Port Forwarding Wizard 4.8.0 - Buffer Overflow
Local attackers can execute arbitrary code via a buffer overflow in the Register feature of Port Forwarding Wizard on Windows systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-37025?
CVE-2020-37025 is a high-severity memory corruption vulnerability in iForwarder and upRedSun Technologies, LLC. Port Forwarding Wizard, published on 30 Jan 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-120
Which versions are affected by CVE-2020-37025?
How do I fix CVE-2020-37025?
No fix has been published for CVE-2020-37025 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-37025 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37025 exists.
Sources
Also known as GHSA-fpjq-x42p-j7jq.