CVE-2021-47759: Ttyplus Mtputty

Medium severity, CVSS 6.2. EPSS: 0.1% chance of exploitation in the next 30 days.

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.

Affected products

• Ttyplus Mtputty: version 1.0.1.21 only

Published 2026-01-15. Last modified 2026-06-17.