CVE-2025-7247 in CADImage Plugin
Summary
by MITRE • 07/21/2025
IrfanView CADImage Plugin DXF File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of IrfanView CADImage Plugin. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of DXF files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26096.
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Analysis
by VulDB Data Team • 07/25/2025
The CVE-2025-7247 vulnerability represents a critical out-of-bounds read flaw within the IrfanView CADImage Plugin's DXF file parsing functionality, creating a remote code execution vector that poses significant risks to affected systems. This vulnerability specifically targets the CADImage plugin component of IrfanView, a widely used image viewing and conversion application that supports various CAD file formats including DXF. The flaw manifests when the plugin processes maliciously crafted DXF files, where insufficient input validation leads to memory access violations that can be exploited by remote attackers to gain unauthorized code execution privileges. The vulnerability's classification as a remote code execution threat underscores its severity, as it enables attackers to compromise systems without requiring local access or administrative privileges.
The technical implementation of this vulnerability stems from improper bounds checking during the parsing of DXF file structures, particularly within the CADImage plugin's handling of user-supplied data. When IrfanView processes a DXF file through the CADImage plugin, the application fails to validate the length and structure of data elements within the file format, creating opportunities for attackers to craft malicious input that triggers memory read operations beyond allocated buffer boundaries. This type of vulnerability aligns with CWE-125: Out-of-bounds Read, which specifically addresses situations where applications read data beyond the intended buffer limits. The lack of proper input sanitization and validation allows attackers to manipulate the parsing process and potentially control memory access patterns to execute arbitrary code within the application's execution context.
The operational impact of CVE-2025-7247 extends beyond simple code execution capabilities, as it provides attackers with a pathway to establish persistent access and potentially escalate privileges within affected systems. The vulnerability requires user interaction to exploit, meaning that successful attacks typically involve social engineering techniques such as phishing emails containing malicious DXF attachments or compromised websites that deliver malicious files through web browsers. Once executed, the code injection can lead to complete system compromise, allowing attackers to install additional malware, modify system configurations, or establish backdoors for continued access. The attack surface is particularly concerning given IrfanView's widespread adoption across various industries and its legitimate use in professional environments where users frequently handle CAD files from external sources.
Mitigation strategies for CVE-2025-7247 should focus on immediate patch management and operational security measures to protect against exploitation attempts. Organizations must prioritize updating to the latest versions of IrfanView that contain fixes for this vulnerability, as the vendor has likely released patches addressing the buffer overflow conditions. Additionally, implementing network-level protections such as web application firewalls and content filtering systems can help prevent malicious DXF files from reaching end users. Security teams should also consider disabling the CADImage plugin in environments where it is not essential, particularly in high-risk scenarios where users might encounter untrusted files. From an ATT&CK perspective, this vulnerability maps to techniques involving execution through compromised applications and remote access tools, making it particularly relevant for defensive measures targeting application sandboxing and privilege separation. Regular security awareness training should emphasize the dangers of opening untrusted files and the importance of verifying file sources before processing potentially malicious content.