{"id":87230,"date":"2026-07-19T01:01:50","date_gmt":"2026-07-19T01:01:50","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2025-3678-critical-buffer-overflow-vulnerability-in-pcman-ftp-server-2-0-7","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-3678-critical-buffer-overflow-vulnerability-in-pcman-ftp-server-2-0-7\/","title":{"rendered":"CVE-2025-3678: Critical Buffer Overflow Vulnerability in PCMan FTP Server 2.0.7<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

A critical vulnerability, identified as CVE-2025-3678, has been discovered in PCMan FTP Server 2.0.7. The vulnerability impacts the HELP Command Handler’s processing ability, leading to a buffer overflow. This vulnerability can be exploited remotely and may result in potential system compromise or data leakage. The severity of this vulnerability and the high potential for misuse necessitates immediate attention and remediation.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-3678
\nSeverity: Critical (7.3 CVSS Score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

PCMan FTP Server| 2.0.7<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability is due to improper handling of certain commands within the HELP Command Handler component of PCMan FTP Server 2.0.7. An attacker can exploit this vulnerability by sending a specially crafted command that triggers a buffer overflow. This can lead to arbitrary code execution, resulting in complete system compromise or potential data leakage.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

The following is a conceptual example of how the vulnerability might be exploited. This could be a sample FTP command leading to buffer overflow:<\/p>\n

ftp> open target.example.com\nConnected to target.example.com.\n220 PCMan FTP Server 2.0.7 ready...\nftp> user anonymous\n331 User name okay, need password.\nftp> pass anonymous\n230 User logged in, proceed.\nftp> help AAAAAAAAAAAAAAAA...[long string]...<\/code><\/pre>\n
In this example, a long string of ‘A’s is sent to the `help` command, causing a buffer overflow.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview A critical vulnerability, identified as CVE-2025-3678, has been discovered in PCMan FTP Server 2.0.7. The vulnerability impacts the HELP Command Handler’s processing ability, leading to a buffer overflow. This vulnerability can be exploited remotely and may result in potential system compromise or data leakage. The severity of this vulnerability and the high potential for […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-87230","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t