CVE-2025-47749 in V-SFT
Summary
by MITRE • 05/19/2025
V-SFT v6.2.5.0 and earlier contains an issue with free of pointer not at start of buffer in VS6EditData.dll!CWinFontInf::WinFontMsgCheck 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 • 05/19/2025
The vulnerability identified as CVE-2025-47749 affects V-SFT software version 6.2.5.0 and earlier, specifically within the VS6EditData.dll module in the CWinFontInf::WinFontMsgCheck function. This represents a critical memory corruption flaw that arises from improper handling of pointer arithmetic during file processing operations. The vulnerability manifests when the application processes specially crafted V7 or V8 file formats, which are commonly used in digital content creation and editing workflows.
The technical root cause of this vulnerability stems from a buffer overflow condition where the software attempts to free memory at an arbitrary pointer location rather than at the beginning of the allocated buffer. This flaw falls under the category of improper free operations and memory management errors, aligning with CWE-415 and CWE-416 vulnerability classifications. The issue occurs during the font message checking process where the application fails to properly validate buffer boundaries before performing memory deallocation operations, creating opportunities for attackers to manipulate memory layout and execute malicious code.
The operational impact of this vulnerability extends beyond simple application crashes to encompass potential information disclosure and arbitrary code execution capabilities. When an attacker successfully triggers this vulnerability through maliciously crafted V7 or V8 files, the system may experience unauthorized code execution with the privileges of the affected application. This could lead to complete system compromise, data exfiltration, or persistence mechanisms being established within the target environment. The vulnerability affects users who regularly process or open files from untrusted sources, making it particularly dangerous in enterprise environments where document sharing is common.
Mitigation strategies for CVE-2025-47749 should prioritize immediate software updates to the latest available version of V-SFT that contains patches for this memory corruption flaw. Organizations should implement strict file validation procedures and restrict the opening of untrusted files through automated security controls. Network segmentation and application whitelisting can help limit the potential attack surface, while monitoring systems should be configured to detect unusual memory access patterns or application crashes. The vulnerability demonstrates the importance of proper memory management practices in software development and highlights the need for regular security assessments of third-party libraries and components. This issue also aligns with ATT&CK technique T1059.007 for command and script interpreter execution, as successful exploitation could enable attackers to execute arbitrary commands through compromised applications.