CVE-2021-47759

MEDIUM

MTPutty 1.0.1.21 - Sensitive Information Disclosure via PowerShell Process Listing

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-47759. PoCs published by Sedat Ozdemir.

AI-analyzed exploit summary This exploit demonstrates an information disclosure vulnerability in MTPutty 1.0.1.21 where SSH passwords are exposed in the command line arguments of the process, retrievable via PowerShell.

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.

Exploits (1)

exploitdb WORKING POC
by Sedat Ozdemir · textlocalwindows
https://www.exploit-db.com/exploits/50574

This exploit demonstrates an information disclosure vulnerability in MTPutty 1.0.1.21 where SSH passwords are exposed in the command line arguments of the process, retrievable via PowerShell.

Classification
Working Poc 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: MTPutty 1.0.1.21
No auth needed
Prerequisites: Access to the system where MTPutty is running · Ability to execute PowerShell commands
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (2)

Core 2
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/50574
Various Sources product
https://ttyplus.com/multi-tabbed-putty/

Scores

CVSS v3 6.2
EPSS 0.0010
EPSS Percentile 0.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-522
Status published
Published Jan 15, 2026
Tracked Since Feb 18, 2026