PT-2026-3184 · Nbmonitor · Nbmonitor

Erick Galindo · CVE-2021-47814 · Published 2026-01-15 · Updated 2026-06-29

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions NBMonitor version 1.6.8

Description NBMonitor version 1.6.8 is subject to a denial of service condition. An attacker can cause the application to crash by providing a specially crafted input to the registration code field. Specifically, pasting a 256-character buffer into the registration key field triggers an application crash and potential system instability. The vulnerable input field is associated with the application’s registration process.

Recommendations Update to a newer version of NBMonitor that addresses this issue. As a temporary workaround, limit the input length allowed in the registration key field to prevent the buffer overflow.

Exploit

Fix

DoS

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2021-47814

Affected Products

Nbmonitor

References · 7

• 🔥 https://exploit-db.com/exploits/49964 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47814 · Security Note
• https://osv.dev/vulnerability/CVE-2021-47814 · Vendor Advisory
• https://t.me/cveNotify/178865 · Telegram Post
• http://nsauditor.com · Note
• https://twitter.com/CVEnew/status/2012126478201192795 · Twitter Post
• https://vulncheck.com/advisories/nbmonitor-denial-of-service-poc · Note