Overview
Recent cybersecurity investigations have flagged a significant vulnerability, CVE-2025-47760, within the V-SFT software versions up to v6.2.5.0. This vulnerability, a stack-based buffer overflow issue, is located in the VS6MemInIF!set_temp_type_default function and can be triggered by opening specially crafted V7 or V8 files. This vulnerability is of immediate concern as it allows for potential system compromise or data leakage. It is pertinent to individuals or organizations using the vulnerable versions of V-SFT software as it could lead to unauthorized access to sensitive data and potentially disrupt essential operations.
Vulnerability Summary
CVE ID: CVE-2025-47760
Severity: High (7.8 CVSS Severity Score)
Attack Vector: Specially crafted V7 or V8 files
Privileges Required: Low
User Interaction: Required
Impact: Potential system compromise or data leakage
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Product | Affected Versions
V-SFT | v6.2.5.0 and earlier
How the Exploit Works
The vulnerability arises from an issue within the VS6MemInIF!set_temp_type_default function in the V-SFT software. By crafting and then opening specially designed V7 or V8 files, the stack-based buffer overflow vulnerability can be exploited. A successful exploit could cause the software to crash, which may result in unauthorized information disclosure and arbitrary code execution. This potential arbitrary code execution could enable attackers to gain control over the affected system, leading to a system compromise or data leakage.
Conceptual Example Code
The following pseudocode gives a basic illustration of how the vulnerability might be exploited:
# Pseudocode for exploiting CVE-2025-47760
# Create a malicious V8 file
malicious_file = create_malicious_file()
# Open the malicious V8 file in V-SFT
open_file_in_vsft(malicious_file)
# The opening of the file triggers the buffer overflow
# and executes the malicious code embedded within the fileIt’s important to note that the exploit requires user interaction – specifically the opening of the malicious file. This aspect could be exploited in a phishing attack, where unsuspecting users are tricked into opening the harmful file.
Mitigation Guidance
The primary mitigation method for CVE-2025-47760 is to apply the vendor patch. In situations where the patch cannot be immediately implemented, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. With this, the potential impact of the vulnerability can be reduced until the vendor’s patch is applied. Users are strongly urged to apply the patch as soon as possible to prevent potential system compromise or data leakage.