What is CVE-2020-37025?

CVE-2020-37025 is a high-severity vulnerability in Iforwarder And Upredsun Technologies, Llc. Port Forwarding Wizard, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.4/10. Published 2026-01-30.

How severe is CVE-2020-37025?

High severity. CVSS v3 base score is 8.4 out of 10.

Buffer overflow in Iforwarder And Upredsun Technologies, Llc. Port Forwarding Wizard

CVE-2020-37025

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.

Vulnerability class: Buffer Overflow

EPSS: 0.002 (5.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Iforwarder And Upredsun Technologies, Llc. Port Forwarding Wizard — versions 4.8.0

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2020-37025?: CVE-2020-37025 is a high-severity vulnerability in Iforwarder And Upredsun Technologies, Llc. Port Forwarding Wizard, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.4/10. Published 2026-01-30.
How severe is CVE-2020-37025?: High severity. CVSS v3 base score is 8.4 out of 10.