Answer in brief
CVE-2021-47814 records a High severity (CVSS 7.5) vulnerability in NBMonitor 1.6.8 - Denial of Service (PoC). The current sources do not mark it as known exploited. The current feed maps Nsauditor/NBMonitor (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Nsauditor/NBMonitor (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Nsauditor/NBMonitorgeneric | 1.6.8 | Not reported |
Published upstream
Jan 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 29, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 29, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2021-47814 records a High severity (CVSS 7.5) vulnerability in NBMonitor 1.6.8 - Denial of Service (PoC). The current sources do not mark it as known exploited. The current feed maps Nsauditor/NBMonitor (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Nsauditor/NBMonitor (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Nsauditor/NBMonitorgeneric | 1.6.8 | Not reported |
Published upstream
Jan 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 29, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 29, 2026
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.
Quoted source text, attributed separately from HOL analysis.