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CVE-2020-37206 Nsasoft CVE debrief

CVE-2020-37206 is a medium-severity denial of service vulnerability in ShareAlarmPro, a network access control software developed by Nsasoft. An attacker can exploit this vulnerability by providing an oversized registration key, which causes the application to crash. The vulnerability has a CVSS score of 4.6 and is considered a medium threat. The CVE record was published on February 11, 2026, and last modified on June 29, 2026.

Vendor
Nsasoft
Product
Nsauditor ShareAlarmPro Advanced Network Access Control
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 ShareAlarmPro should prioritize patching this vulnerability to prevent potential denial of service attacks. Attackers could exploit this vulnerability to disrupt network access control, potentially leading to security breaches. Security teams should review their inventory of ShareAlarmPro installations and ensure they are updated to a patched version.

Technical summary

CVE-2020-37206 is a denial of service vulnerability in ShareAlarmPro that occurs when an oversized registration key is provided, causing the application to crash. The vulnerability is triggered when a 1000-character buffer payload is pasted into the registration key field. This issue is related to CWE-120, a buffer overflow vulnerability. The CVSS vector for this vulnerability 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.

Defensive priority

Patching this vulnerability is a high priority for organizations using ShareAlarmPro. Security teams should review their inventory of ShareAlarmPro installations and ensure they are updated to a patched version to prevent potential denial of service attacks.

Recommended defensive actions

  • Review and update ShareAlarmPro installations to ensure they are patched against CVE-2020-37206.
  • Monitor network access control systems for potential denial of service attacks.
  • Implement compensating controls, such as rate limiting or IP blocking, to prevent exploitation attempts.
  • Verify vendor remediation workflow and ensure that ShareAlarmPro is configured securely.
  • Track exception monitoring for potential security breaches.

Evidence notes

The CVE record for CVE-2020-37206 was published on February 11, 2026, and last modified on June 29, 2026. The vulnerability is considered a medium threat with a CVSS score of 4.6. The NVD provides additional details on the vulnerability, including its CVSS vector and CWE classification.

Official resources

This article is AI-assisted and based on the supplied source corpus.