CVE-2025-47812 — AI Deep Analysis Summary

🚨 **Essence**: Critical Remote Code Execution (RCE) in Wing FTP Server. 📉 **Consequences**: Attackers can execute arbitrary commands with elevated privileges (Root/SYSTEM).…

🔍 **Root Cause**: CWE-158 (Improper Neutralization of Null Byte). 🐛 **Flaw**: Improper NULL byte handling in the `username` parameter during login.…

📦 **Product**: Wing FTP Server. 📅 **Affected Versions**: 7.4.3 and earlier. 🚫 **Fixed Version**: 7.4.4+. 🌐 **Platform**: Cross-platform FTP server software.

👑 **Privileges**: Executes code as Root (Linux) or SYSTEM (Windows). 📂 **Data**: Full read/write access to server files. 🛠️ **Actions**: Arbitrary command execution, reverse shells, and persistent backdoors.

⚠️ **Threshold**: Low. 🚪 **Auth**: Unauthenticated attack vector. 🔑 **Config Requirement**: Anonymous login must be **enabled** on the server. 🎯 **Target**: Specifically targets the `loginok.html` handler.

🔥 **Exploits**: Yes, multiple public PoCs available. 📂 **Sources**: GitHub repos (e.g., `4m3rr0r`, `0xcan1337`, `ill-deed`). 🧪 **Tools**: Nuclei templates and Python scripts for reverse shells.…

🔎 **Check**: Scan for Wing FTP Server banners. 🧪 **Test**: Verify if anonymous login is enabled. 📡 **Detection**: Look for Lua injection attempts in login parameters.…

✅ **Fix**: Upgrade to **Wing FTP Server 7.4.4** or later. 📥 **Source**: Official vendor website (wftpserver.com). 🔄 **Action**: Immediate patching is the primary mitigation.

🚫 **Workaround**: **Disable Anonymous Login** immediately. 🛑 **Restrict**: Block external access to FTP ports if possible. 🧹 **Monitor**: Audit session files for Lua injection artifacts.…

🔴 **Priority**: CRITICAL (CVSS 9.8). ⏳ **Urgency**: Patch immediately. 🚨 **Reason**: Unauthenticated RCE with high impact. 📢 **Action**: Prioritize for all servers with anonymous access enabled.