Vulnerability · Published Jan 15, 2026 · Assigned by VulnCheck
CVE-2021-47814NBMonitor 1.6.8 - Denial of Service (PoC)
High 7.5
In plain English
A high-severity buffer overflow in NBMonitor from Nsauditor. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 63.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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 (as reported)
Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- ExploitDB-49964 exploit
- Vendor Homepage product
- VulnCheck Advisory: NBMonitor 1.6.8 - Denial of Service (PoC) third-party-advisory