CVE-2021-47814

NBMonitor 1.6.8 - Denial of Service (PoC)

CVSS 6.7 MEDIUMEPSS 0.4%CWE-120

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.7EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

15 Jan 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

Nsauditor · NBMonitor

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References

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