CVE-2021-47814

HIGH 7.5

NBMonitor 1.6.8 - Denial of Service (PoC)

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

NBMonitor 1.6.8 contains a denial of service vulnerability that allows attackers to crash the application by overflowing the registration code input field. Attackers can paste a 256-character buffer into the registration key field to trigger an application crash and potential system instability.

CWE	CWE-120
Vendor	nsauditor
Product	nbmonitor
Published	Jan 15, 2026
Last Updated	Mar 5, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

Nsauditor / NBMonitor

1.6.8

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/49964 nsauditor.com: http://www.nsauditor.com vulncheck.com: https://www.vulncheck.com/advisories/nbmonitor-denial-of-service-poc

Credits

Erick Galindo