Buffer Overflow Vulnerability in Nsauditor by Nsasoft
CVE-2020-37119

8.4HIGH

Key Information:

Vendor

Nsasoft

Status
Nsauditor
Vendor
CVE Published:
5 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-37119?

Nsauditor versions 3.0.28 and 3.2.1.0 are affected by a buffer overflow vulnerability within the DNS Lookup tool. This issue enables attackers to execute arbitrary code by crafting specially designed DNS query payloads, resulting in a three-byte memory overwrite. By circumventing Address Space Layout Randomization (ASLR), this vulnerability can be exploited to execute shellcode using a precisely constructed attack, posing a significant risk to system integrity.

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Affected Version(s)

Nsauditor 3.2.1.0

Nsauditor 3.0.28

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-37119 - Proof of Concept

References

https://www.exploit-db.com/exploits/48350
exploit
https://www.nsauditor.com/
product
https://www.vulncheck.com/advisories/nsauditor-buffer-ove...
third-party-advisory

CVSS V4

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Cervoise
JSON
.