Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-105420— Path Traversal in Wing WFTP Server leading to Remote Code Execution

Quick assessment

Affected
Wing Soft Technology Wing FTP Server
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.

Wing FTP Server 未验证用户的基础目录。拥有管理员权限的攻击者可以通过脚本添加用户目录，使这些新增目录能够突破基础目录的限制。这允许攻击者在系统上写入文件，并可能导致以进程所有者权限执行远程代码。尤为严重的是，由于安装指南中建议使用 运行相关命令，因此创建的文件将以"root"权限生成。 该问题已在 8.2.6 版本中修复。

CVSS 9.4 · Critical
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-105420

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Path Traversal in Wing WFTP Server leading to Remote Code Execution
Source: CVE Program / CVE List V5
Vulnerability Description
Wing FTP Server does not verify user's base folder. An attacker with admin privileges can add user directories via scripts, allowing the added directories to escape the base folder. This allows the attacker to write files on the system and can lead to remote code execution with process owner privileges.Critically, since the installation guide mentions running the command with `sudo`, the files are created as “root.” This issue was fixed in version 8.2.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Wing Soft Technology Wing FTP Server 0 ~ 8.2.6 -

II. Public POCs for CVE-2026-105420

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-105420

请登录查看更多情报信息。

Other References for CVE-2026-105420 (1)

IV. Related Vulnerabilities

Same product: Wing FTP Server
Same weakness: CWE-22