What is CVE-2020-37131?

CVE-2020-37131 is a medium-severity vulnerability in Nsasoft Product_key_explorer, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2026-02-05.

How severe is CVE-2020-37131?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Buffer overflow in Nsasoft Product_key_explorer

CVE-2020-37131

Nsauditor Product Key Explorer 4.2.2.0 contains a denial of service vulnerability that allows local attackers to crash the application by inputting a specially crafted registration key. Attackers can generate a payload of 1000 bytes of rep…

Vulnerability class: Buffer Overflow

EPSS: 0.002 (13.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Nsasoft Product_key_explorer — versions 4.2.2.0
Nsauditor Product Key Explorer — versions 4.2.2.0

Weakness classification (CWE)

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

References

disclosure@vulncheck.com (Exploit, VDB Entry, exploit)
disclosure@vulncheck.com (Product, product)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2020-37131?: CVE-2020-37131 is a medium-severity vulnerability in Nsasoft Product_key_explorer, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2026-02-05.
How severe is CVE-2020-37131?: Medium severity. CVSS v3 base score is 6.2 out of 10.