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Vulnerability record · CVE-2021-47815 · published 16 January 2026

CVE-2021-47815: Nsasoft nsauditor classic buffer overflow vulnerability

Nsasoft · Nsauditor

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.

6.7 CVSS 4.0 Medium EPSS 0.49% · top 60.4% CWE-120 · Classic buffer overflow
6.7CVSS 4.0 base score
0.49%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 1 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.nsauditor.com Product
https://www.exploit-db.com/exploits/49965 ExploitThird Party Advisory
https://www.vulncheck.com/advisories/nsauditor-denial-of-service-poc Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-47815), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.