Denial of Service Vulnerability in Managed Switch Port Mapping Tool by Vendor
CVE-2021-47894

6.7MEDIUM

Key Information:

Vendor

Northwest Performance Software, Inc.

Status
Managed Switch Port Mapping Tool
Vendor
CVE Published:
23 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47894?

The Managed Switch Port Mapping Tool version 2.85.2 is susceptible to a denial of service vulnerability. Attackers can exploit this flaw by entering an oversized buffer, specifically a 10,000-character payload, into the IP Address and SNMP Community Name fields. This action can lead to a crash of the application, disrupting service and potential access to critical functionalities.

Affected Version(s)

Managed Switch Port Mapping Tool 2.85.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-47894 - Proof of Concept

References

https://www.exploit-db.com/exploits/49566
exploit
https://switchportmapper.com/
product
https://switchportmapper.com/download.htm
product

CVSS V4

Score:
6.7
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ismael Nava
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