What’s Vulnerable › Vulnerabilities

CVE-2021-47814: NBMonitor 1.6.8 - Denial of Service (PoC)

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-16 · updated 2026-06-29
• Weakness: CWE-120

Description

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.

Affected products

• Nsauditor NBMonitor: 1.6.8

References

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

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