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CVE-2021-47759

6.2 · MEDIUM

MTPutty 1.0.1.21 contains a sensitive information disclosure vulnerability that allows local attackers to view SSH connection passwords through Windows PowerShell process listing.

Published Jan 15, 2026CWE-522EPSS 0.11%

Overview

CVE-2021-47759 is a medium-severity vulnerability. It was published on January 15, 2026 and has a CVSS 3.1 base score of 6.2 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.2, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

MTPutty 1.0.1.21 contains a sensitive information disclosure vulnerability that allows local attackers to view SSH connection passwords through Windows PowerShell process listing. Attackers can run a PowerShell command to retrieve the full command line of MTPutty processes, exposing plaintext SSH credentials.

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

Refttyplus.com/multi-tabbed-putty/Refwww.exploit-db.com/exploits/50574

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47759?

CVE-2021-47759 is a medium-severity vulnerability. It was published on January 15, 2026 and has a CVSS 3.1 base score of 6.2 (MEDIUM).

How severe is CVE-2021-47759?

This vulnerability has a CVSS 3.1 base score of 6.2, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-47759?

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-2021-47759?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47759 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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