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CVE-2021-47894

7.5 · HIGH

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, 2026CWE-770EPSS 0.29%

Overview

CVE-2021-47894 is a high-severity vulnerability. It was published on January 23, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refswitchportmapper.com/Refswitchportmapper.com/download.htmRefwww.exploit-db.com/exploits/49566Refwww.vulncheck.com/advisories/managed-switch-port-mapping-tool-denial-of-serviceRefwww.exploit-db.com/exploits/49566

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47894?

CVE-2021-47894 is a high-severity vulnerability. It was published on January 23, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2021-47894?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-47894?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-47894?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47894 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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