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PatchSiren cyber security CVE debrief

CVE-2020-37199 Nsasoft CVE debrief

CVE-2020-37199 is a denial of service vulnerability in NBMonitor 1.6.6.0. Attackers can generate a 1000-character buffer payload and paste it into the 'Key' field to trigger an application crash. This vulnerability has a CVSS score of 4.6 and a severity of MEDIUM. The CVE was published on 2026-02-11T21:16:14.623Z and last modified on 2026-06-29T18:29:45.990Z. The vulnerability affects NBMonitor version 1.6.6.0. Limited source evidence is available, and further investigation is required to determine the full scope of the vulnerability.

Vendor
Nsasoft
Product
Nsauditor NBMonitor
CVSS
MEDIUM 4.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-02-11
Original CVE updated
2026-06-29
Advisory published
2026-02-11
Advisory updated
2026-06-29

Who should care

Organizations using NBMonitor 1.6.6.0 should prioritize patching this vulnerability to prevent potential denial of service attacks. Additionally, security teams and vulnerability managers should be aware of this vulnerability and take necessary steps to mitigate the risk. The vulnerability's MEDIUM severity score indicates that it may not be critical, but it still requires attention.

Technical summary

The vulnerability is a denial of service (DoS) vulnerability in NBMonitor 1.6.6.0. An attacker can generate a 1000-character buffer payload and paste it into the 'Key' field, causing the application to crash. The vulnerability has a CVSS score of 4.6 and a severity of MEDIUM. The CVSS vector is CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. The weakness associated with this vulnerability is CWE-120.

Defensive priority

This vulnerability has a MEDIUM severity score and requires attention from security teams and vulnerability managers. Organizations using NBMonitor 1.6.6.0 should prioritize patching this vulnerability to prevent potential denial of service attacks.

Recommended defensive actions

  • Apply the patch or update to a fixed version of NBMonitor.
  • Implement input validation and sanitization to prevent buffer overflow attacks.
  • Monitor the application for potential denial of service attacks.
  • Consider implementing compensating controls, such as rate limiting or IP blocking.
  • Review and update incident response plans to include procedures for handling denial of service attacks.

Evidence notes

The source evidence for this vulnerability is limited, and further investigation is required to determine the full scope of the vulnerability. The CVE record and NVD detail provide some information about the vulnerability, but additional research is needed to fully understand the vulnerability's impact. The source item URL provides additional information about the vulnerability, including references to exploit and mitigation resources.

Sources and references

Verified primary and authoritative sources

  • CVE-2020-37199 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2020-37199

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2020-37199 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2020-37199

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.