{"id":59351,"date":"2025-07-13T11:53:59","date_gmt":"2025-07-13T11:53:59","guid":{"rendered":""},"modified":"2025-10-21T04:13:31","modified_gmt":"2025-10-21T10:13:31","slug":"cve-2025-47758-stack-based-buffer-overflow-vulnerability-in-v-sft-v6-2-5-0-and-earlier","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-47758-stack-based-buffer-overflow-vulnerability-in-v-sft-v6-2-5-0-and-earlier\/","title":{"rendered":"CVE-2025-47758: Stack-Based Buffer Overflow Vulnerability in V-SFT v6.2.5.0 and Earlier<\/strong>"},"content":{"rendered":"

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

The vulnerability we’re discussing today, designated as CVE-2025-47758, is a stack-based buffer overflow vulnerability that affects V-SFT versions 6.2.5.0 and earlier. This security vulnerability is especially concerning as it can lead to system crashes, information disclosure, and arbitrary code execution when opening specially crafted V7 or V8 files. The issue lies in the VS6File!CTxSubFile::get_ProgramFile_name function, and if exploited successfully, it could potentially lead to a full system<\/a> compromise or data leakage.<\/p>\n

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

CVE ID: CVE-2025-47758
\nSeverity: High (7.8 CVSS Score)
\nAttack Vector: Local
\nPrivileges Required: User
\nUser Interaction: Required
\nImpact: System crashes, information disclosure<\/a>, arbitrary code execution, potential system compromise or data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

V-SFT | 6.2.5.0 and earlier<\/p>\n

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

The exploit takes advantage of a stack-based buffer overflow vulnerability<\/a> in the VS6File!CTxSubFile::get_ProgramFile_name function of V-SFT. An attacker would create a specially crafted V7 or V8 file and induce a user<\/a> to open it. This would result in an overflow of the stack buffer<\/a>, leading to a system crash, information disclosure, or arbitrary code execution.<\/p>\n

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

Here’s a conceptual example of how an attacker might craft a malicious V7 or V8 file to exploit this vulnerability<\/a>:<\/p>\n

# This is a conceptual example, and should not be used for malicious intent\ndef create_malicious_file(filename):\noverflow_payload = 'A' * 1024  # Stack buffer size + 1\nwith open(filename, 'w') as file:\nfile.write(overflow_payload)\ncreate_malicious_file('malicious.v7')<\/code><\/pre>\n
In the above example, the malicious file (‘malicious.v7’) contains a payload that exceeds the stack buffer size, leading to a buffer overflow when the file is opened using the vulnerable<\/a> function in V-SFT.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
Users and administrators are advised to apply the vendor-provided patch to mitigate this vulnerability. As a temporary mitigation, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) could be used to detect and block attempts to exploit this vulnerability<\/a>. However, these measures should only be considered as temporary, and the application of the vendor patch should not be delayed.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The vulnerability we’re discussing today, designated as CVE-2025-47758, is a stack-based buffer overflow vulnerability that affects V-SFT versions 6.2.5.0 and earlier. This security vulnerability is especially concerning as it can lead to system crashes, information disclosure, and arbitrary code execution when opening specially crafted V7 or V8 files. The issue lies in the VS6File!CTxSubFile::get_ProgramFile_name […]<\/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":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[86,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59351","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-rce"],"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