CVE-2021-47815

HIGH

Nsauditor 3.2.3 - Denial of Service via Registration Key Input Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-47815. PoCs published by Erick Galindo.

AI-analyzed exploit summary This PoC demonstrates a Denial of Service (DoS) vulnerability in Nsauditor 3.2.3 by overflowing a buffer in the registration code field with a large string of 'A' characters. The exploit writes the payload to a file, which is then manually pasted into the application to trigger the crash.

Description

Nsauditor 3.2.3 contains a denial of service vulnerability in the registration code input field that allows attackers to crash the application. Attackers can paste a large buffer of 256 repeated characters into the 'Key' field to trigger an application crash.

Exploits (1)

exploitdb WORKING POC
by Erick Galindo · pythondoswindows
https://www.exploit-db.com/exploits/49965

This PoC demonstrates a Denial of Service (DoS) vulnerability in Nsauditor 3.2.3 by overflowing a buffer in the registration code field with a large string of 'A' characters. The exploit writes the payload to a file, which is then manually pasted into the application to trigger the crash.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Nsauditor 3.2.3.0
No auth needed
Prerequisites: Access to the Nsauditor application · Ability to paste clipboard content into the registration form
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/49965
Product product
http://www.nsauditor.com

Scores

CVSS v3 7.5
EPSS 0.0043
EPSS Percentile 34.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-120
Status published
Products (2)
nsasoft/nsauditor 3.2.3
nsasoft/nsauditor < 3.2.7
Published Jan 16, 2026
Tracked Since Feb 18, 2026