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.

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00028.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Nsauditor Subscribe
Nbmonitor Subscribe

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Nsauditor Subscribe
Nbmonitor Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://www.nsauditor.com cve-icon cve-icon
https://www.exploit-db.com/exploits/49964 cve-icon cve-icon
https://www.vulncheck.com/advisories/nbmonitor-denial-of-service-poc cve-icon cve-icon
History

Fri, 16 Jan 2026 14:15:00 +0000

Type Values Removed Values Added
First Time appeared Nsauditor
Nsauditor nbmonitor
Vendors & Products Nsauditor
Nsauditor nbmonitor

Thu, 15 Jan 2026 23:45:00 +0000

Type Values Removed Values Added
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.
Title NBMonitor 1.6.8 - Denial of Service (PoC)
Weaknesses CWE-120
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.7, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-01-16T15:47:47.186Z

Reserved: 2026-01-14T17:11:19.895Z

Link: CVE-2021-47814

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-01-16T00:16:26.830

Modified: 2026-01-16T00:16:26.830

Link: CVE-2021-47814

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-01-16T13:42:05Z

Weaknesses