CVE-2020-37119: Nsasoft Nsauditor

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

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 overwrite, bypass ASLR, and execute shellcode through a carefully constructed exploit.

Affected products

• Nsasoft Nsauditor: version 3.0.28 only; version 3.2.1.0 only

Published 2026-02-05. Last modified 2026-06-17.