This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login.
Read the full analysis โ
Q1What is this vulnerability? (Essence + Consequences)
๐จ **Essence**: CVE-2019-25361 is a critical buffer overflow in the **SYST command** of Ayukov NFTP v1.71. ๐ฅ **Consequences**: Remote attackers can execute **arbitrary code** on the target system.โฆ
๐ก๏ธ **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. ๐
Q3Who is affected? (Versions/Components)
๐ฅ **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. โ ๏ธ
Q4What can hackers do? (Privileges/Data)
๐ **Attacker Capabilities**: Full **Remote Code Execution (RCE)**. Attackers gain **High** impact on Confidentiality, Integrity, and Availability. They can take over the machine completely. ๐
Q5Is exploitation threshold high? (Auth/Config)
๐ **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. ๐ฏ
Q6Is there a public Exp? (PoC/Wild Exploitation)
๐ฃ **Public Exploit**: **YES**. ExploitDB ID **47576** exists. VulnCheck has published an advisory. Wild exploitation is possible if the exploit is active. ๐ธ๏ธ
Q7How to self-check? (Features/Scanning)
๐ **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'. ๐ง
Q8Is it fixed officially? (Patch/Mitigation)
๐ฉน **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. ๐
Q9What if no patch? (Workaround)
๐ง **No Patch Workaround**: **Isolate** the system. Do not connect to untrusted FTP servers. Use a **firewall** to block outbound FTP connections from this client. ๐
Q10Is it urgent? (Priority Suggestion)
๐ฅ **Urgency**: **CRITICAL**. CVSS 9.8 + Public Exploit + No Auth Required. Patch immediately or isolate. Do not ignore this. ๐จ