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CVE-2026-55201— Evil-WinRM - Path Traversal in download_dir() Function

Quick assessment

Affected
Hackplayers evil-winrm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Evil-WinRM是西班牙Hackplayers公司开源的一款用于渗透测试的远程管理工具。 Hackplayers Evil-WinRM 3.9及之前版本存在路径遍历漏洞，该漏洞源于download_dir()函数存在路径遍历问题，远程恶意Windows服务器返回带有遍历序列的文件名未经验证传递给File.join()，可能导致写文件到预期下载目录之外，攻击者可通过控制远程服务器覆盖敏感客户端文件，实现持久访问或权限提升。

CVSS 6.8 · Medium EPSS 0.30% · P23

Possible ATT&CK Techniques 1 AI

T1562.001

Affected Version Matrix 2

VendorProduct Version RangeStatus
Hackplayers evil-winrm ≤ 3.9 affected
6ecd570a298562dc72ad73978307eb34182f5850 unaffected
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I. Basic Information for CVE-2026-55201

Vulnerability Information
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Vulnerability Title
Evil-WinRM - Path Traversal in download_dir() Function
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Hackplayers Evil-WinRM 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Evil-WinRM是西班牙Hackplayers公司开源的一款用于渗透测试的远程管理工具。 Hackplayers Evil-WinRM 3.9及之前版本存在路径遍历漏洞，该漏洞源于download_dir()函数存在路径遍历问题，远程恶意Windows服务器返回带有遍历序列的文件名未经验证传递给File.join()，可能导致写文件到预期下载目录之外，攻击者可通过控制远程服务器覆盖敏感客户端文件，实现持久访问或权限提升。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Hackplayers evil-winrm 0 ~ 3.9 -

II. Public POCs for CVE-2026-55201

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III. Intelligence Information for CVE-2026-55201

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Patches & Fixes for CVE-2026-55201 (2)

Vendor Advisories for CVE-2026-55201 (1)

IV. Related Vulnerabilities

Same weakness: CWE-22

V. Comments for CVE-2026-55201

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