What is CVE-2020-37119?

CVE-2020-37119 is a critical-severity vulnerability in Nsasoft Nsauditor, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-02-05.

How severe is CVE-2020-37119?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Nsasoft Nsauditor

CVE-2020-37119

Nsauditor 3.0.28 and 3.2.1.0 contains a buffer overflow vulnerability in the DNS Lookup tool that allows attackers to execute arbitrary code by overwriting memory. Attackers can craft a malicious DNS query payload to trigger a three-byte o…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (18.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Nsasoft Nsauditor — versions 3.2.1.0, 3.0.28

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

ExploitDB-48350 (exploit)
Nsauditor Homepage (product)
VulnCheck Advisory: Nsauditor 3.2.1.0 - Buffer Overflow (SEH+ASLR bypass (3 bytes overwrite)) (third-party-advisory)

Frequently asked questions

What is CVE-2020-37119?: CVE-2020-37119 is a critical-severity vulnerability in Nsasoft Nsauditor, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-02-05.
How severe is CVE-2020-37119?: Critical severity. CVSS v3 base score is 9.8 out of 10.