CVE-2019-25361 — AI Deep Analysis Summary

🚨 **Essence**: CVE-2019-25361 is a critical buffer overflow in the **SYST command** of Ayukov NFTP v1.71. 💥 **Consequences**: Remote attackers can execute **arbitrary code** on the target system.…

🛡️ **Root Cause**: **CWE-121** (Stack-based Buffer Overflow). The flaw lies in how the client processes the **SYST** response from the server. Input validation is missing, allowing overflow. 📉

👥 **Affected**: Specifically **Ayukov NFTP client version 1.71**. Developed by Sergey V. Ayukov. If you are using this specific personal tool, you are at risk. ⚠️

💀 **Attacker Capabilities**: Full **Remote Code Execution (RCE)**. Attackers gain **High** impact on Confidentiality, Integrity, and Availability. They can take over the machine completely. 🔓

🔓 **Exploitation Threshold**: **LOW**. CVSS Vector: **AV:N/AC:L/PR:N/UI:N**. No authentication needed. No user interaction required. Network-accessible. Easy to exploit. 🎯

💣 **Public Exploit**: **YES**. ExploitDB ID **47576** exists. VulnCheck has published an advisory. Wild exploitation is possible if the exploit is active. 🕸️

🔍 **Self-Check**: Scan for **NFTP client v1.71** usage. Check if your system connects to untrusted FTP servers. Look for the specific binary or process name 'NFTP'. 🧐

🩹 **Official Fix**: The vendor homepage is **ayukov.com/nftp/**. However, the CVE was published in **2026**, suggesting a long-standing issue. Check for updates there. 🔄

🚧 **No Patch Workaround**: **Isolate** the system. Do not connect to untrusted FTP servers. Use a **firewall** to block outbound FTP connections from this client. 🛑

🔥 **Urgency**: **CRITICAL**. CVSS 9.8 + Public Exploit + No Auth Required. Patch immediately or isolate. Do not ignore this. 🚨