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Vulnerabilities

Vulnerability · CVE-2021-47894

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.

Published Jan 23, 2026 · catalog updated Jul 28, 2026 · Northwest Performance Software, Inc. Managed Switch Port Mapping Tool

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2021-47894. EPSS is 0.29%. Act only if a listed version of Northwest Performance Software, Inc. Managed Switch Port Mapping Tool is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.29%
Remediation
Vendor / distro source
Affected products
vendor Northwest Performance Software, Inc. Managed Switch Port Mapping Tool 2.85.2

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Northwest Performance Software, Inc. Managed Switch Port Mapping Tool 2.85.22.85.2

How to fix CVE-2021-47894

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2021-47894. EPSS is 0.29%. Act only if a listed version of Northwest Performance Software, Inc. Managed Switch Port Mapping Tool is installed.

Which versions are affected?

Compare what you have installed with Northwest Performance Software, Inc. Managed Switch Port Mapping Tool 2.85.2 2.85.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.29%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 23, 2026 · EUVD

    Detected

    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.

  2. Jul 28, 2026 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2021-47894

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-47894

    30-day exploitation probability 0.29%

    first.org
  • EUVDVulnerability recordEUVD-2026-4300

    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 t

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 5, 2026
  • CVE.orgNov 4, 2026
  • EUVDNov 2, 2026