PT-2026-50529 · Hackplayers · Evil-Winrm

Tristan Madani · Published 2026-06-17 · Updated 2026-06-17 · CVE-2026-55201

Mitre

CVSS v3.1

6.8

Medium

Base vector

AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Evil-WinRM through 3.9, fixed in commit 6ecd570, contains a path traversal vulnerability in the download dir() function that allows a rogue or compromised remote Windows server to write files outside the intended download directory by returning filenames with traversal sequences from Get-ChildItem command output that are passed unsanitized to File.join(). Attackers controlling the remote server can exploit this to overwrite sensitive client-side files such as SSH authorized keys or shell configuration files, achieving persistent access or privilege escalation on the client machine.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-55201

Affected Products

Evil-Winrm

References · 3

• https://github.com/Hackplayers/evil-winrm/commit/6ecd570a298562dc72ad73978307eb34182f5850 · Patch
• https://github.com/Hackplayers/evil-winrm/pull/81 · Note
• https://vulncheck.com/advisories/evil-winrm-path-traversal-in-download-dir-function · Note