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

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.exploit-db.com/exploits/48350	Exploit Third Party Advisory VDB Entry
https://www.nsauditor.com/	Product
https://www.vulncheck.com/advisories/nsauditor-buffer-overflow-sehaslr-bypass-bytes-overwrite	Broken Link

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:nsasoft:nsauditor:3.0.28:::::::*
	cpe:2.3:a:nsasoft:nsauditor:3.2.1.0:::::::*

History

09 Feb 2026, 22:08

Type	Values Removed	Values Added
References	~~() https://www.exploit-db.com/exploits/48350 -~~	() https://www.exploit-db.com/exploits/48350 - Exploit, Third Party Advisory, VDB Entry
References	~~() https://www.nsauditor.com/ -~~	() https://www.nsauditor.com/ - Product
References	~~() https://www.vulncheck.com/advisories/nsauditor-buffer-overflow-sehaslr-bypass-bytes-overwrite -~~	() https://www.vulncheck.com/advisories/nsauditor-buffer-overflow-sehaslr-bypass-bytes-overwrite - Broken Link
CPE		cpe:2.3:a:nsasoft:nsauditor:3.0.28:::::::* cpe:2.3:a:nsasoft:nsauditor:3.2.1.0:::::::*
First Time		Nsasoft Nsasoft nsauditor
CWE		CWE-787

05 Feb 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-05 17:16

Updated : 2026-02-09 22:08

NVD link : CVE-2020-37119

Mitre link : CVE-2020-37119

CVE.ORG link : CVE-2020-37119

JSON object : View

Products Affected

nsasoft

nsauditor

CWE

CWE-121

Stack-based Buffer Overflow

CWE-787

Out-of-bounds Write

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