CVE-2021-47894: Northwest Performance Software, Inc Managed Switch Port Mapping Tool

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Managed Switch Port Mapping Tool 2.85.2 contains a denial of service vulnerability that allows attackers to crash the application by creating an oversized buffer. Attackers can generate a 10,000-character buffer and paste it into the IP Address and SNMP Community Name fields to trigger the application crash.

Affected products

• Northwest Performance Software, Inc Managed Switch Port Mapping Tool: version 2.85.2 only

Published 2026-01-23. Last modified 2026-06-17.