CVE-2025-47759 in V-SFT
Summary
by MITRE • 05/19/2025
V-SFT v6.2.5.0 and earlier contains an issue with stack-based buffer overflow in VS6ComFile!CV7BaseMap::WriteV7DataToRom function. Opening specially crafted V7 or V8 files may lead to crash, information disclosure, and arbitrary code execution.
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Analysis
by VulDB Data Team • 10/10/2025
The vulnerability identified as CVE-2025-47759 affects V-SFT version 6.2.5.0 and earlier, presenting a critical stack-based buffer overflow within the VS6ComFile component. This flaw specifically resides in the CV7BaseMap::WriteV7DataToRom function, which processes V7 and V8 file formats used for firmware and software deployment. The vulnerability stems from inadequate input validation and bounds checking when handling user-supplied data structures during file parsing operations. Attackers can exploit this weakness by crafting malicious V7 or V8 files that trigger the buffer overflow condition, potentially leading to system compromise.
The technical implementation of this vulnerability demonstrates a classic stack-based buffer overflow scenario where insufficient boundary checks allow an attacker to overwrite adjacent memory locations on the stack. This occurs when the application processes specially crafted data within the WriteV7DataToRom function without proper validation of input lengths or memory allocation boundaries. The flaw aligns with CWE-121 Stack-based Buffer Overflow, which specifically addresses buffer overflows occurring in stack memory regions. The vulnerability enables multiple attack vectors including remote code execution, system crashes, and potential information disclosure through memory corruption.
From an operational perspective, this vulnerability poses significant risks to systems utilizing V-SFT for firmware management and deployment operations. The attack surface extends to any environment where these files are processed, including development workstations, manufacturing systems, and deployment servers. Successful exploitation could result in complete system compromise, allowing attackers to execute arbitrary code with the privileges of the affected application. The vulnerability's impact is particularly severe in environments where firmware updates are automatically processed, as attackers could deliver malicious payloads through compromised update channels. This represents a critical threat to industrial control systems and embedded device management infrastructures.
Mitigation strategies for CVE-2025-47759 should prioritize immediate remediation through vendor-provided patches or updates to V-SFT versions beyond 6.2.5.0. Organizations should implement network segmentation and access controls to limit exposure to potentially malicious files. Input validation and sanitization measures should be enhanced at all levels of the application stack, including file format validation and length checking. Security monitoring should be enhanced to detect suspicious file processing activities and potential exploitation attempts. The vulnerability's classification under ATT&CK technique T1059.007 Command and Scripting Interpreter suggests that attackers may leverage this flaw to establish persistent access through automated execution mechanisms. Additionally, implementing runtime protections such as stack canaries and address space layout randomization can provide defense-in-depth measures against exploitation attempts.