CVE-2020-37199

HIGH

NBMonitor < 1.6.6.0 - Denial of Service via Registration Key Input

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2020-37199. PoCs published by Ismail Tasdelen.

AI-analyzed exploit summary This PoC exploits a denial-of-service vulnerability in NBMonitor 1.6.6.0 by overwriting the 'Key' field with a large buffer of 'A' characters, causing the application to crash. The exploit generates a payload file (poc.txt) which is then manually input into the registration field.

Description

NBMonitor 1.6.6.0 contains a denial of service vulnerability in its registration key input that allows attackers to crash the application. Attackers can generate a 1000-character buffer payload and paste it into the 'Key' field to trigger an application crash.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Ismail Tasdelen · pythondoswindows
https://www.exploit-db.com/exploits/47866

This PoC exploits a denial-of-service vulnerability in NBMonitor 1.6.6.0 by overwriting the 'Key' field with a large buffer of 'A' characters, causing the application to crash. The exploit generates a payload file (poc.txt) which is then manually input into the registration field.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: NBMonitor 1.6.6.0
No auth needed
Prerequisites: NBMonitor 1.6.6.0 installed on Windows · Ability to run the Python script to generate poc.txt · Manual interaction to paste the payload into the registration field
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/47866
Various Sources product
http://www.nsauditor.com/

Scores

CVSS v3 7.5
EPSS 0.0052
EPSS Percentile 40.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-120
Status published
Products (1)
nsasoft/nbmonitor < 1.6.6.0
Published Feb 11, 2026
Tracked Since Feb 18, 2026