NBMonitor 1.6.8 - Denial of Service (PoC)
Priority HIGH 69CWE-120Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00416 36th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-47814
- 2026-10-03 Alias added: GHSA-c6rm-x44q-j5rw
References
Exploit 1
Other 1
More Nsasoft Nbmonitor vulnerabilities
- TI-2020-19334 NBMonitor 1.6.6.0 - 'Key' Denial of Service CVSS 4.0MEDIUM 4.6
Sources
- CVE-2021-47814 · CVE Program
- CVE-2021-47814 · NVD
- FIRST EPSS
- GHSA-c6rm-x44q-j5rw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences