CVE-2025-7276 in CADImage Plugin
Summary
by MITRE • 07/21/2025
IrfanView CADImage Plugin DXF File Parsing Memory Corruption 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 memory corruption condition. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26208.
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Analysis
by VulDB Data Team • 07/26/2025
The CVE-2025-7276 vulnerability represents a critical memory corruption flaw in the IrfanView CADImage Plugin that specifically affects DXF file parsing operations. This vulnerability resides within the plugin's handling of AutoCAD Drawing Exchange Format files, which are commonly used for exchanging technical drawings between different CAD applications. The flaw enables remote code execution when a user opens a maliciously crafted DXF file, making it particularly dangerous in environments where users frequently handle technical documents from external sources. The vulnerability was identified and tracked as ZDI-CAN-26208, highlighting its significance within the cybersecurity community and the need for immediate remediation.
The technical root cause of this vulnerability stems from inadequate input validation within the DXF file parsing routine of the CADImage plugin. When processing DXF files, the plugin fails to properly validate the structure and content of user-supplied data, creating opportunities for memory corruption conditions to occur. This lack of proper validation allows attackers to craft malicious DXF files that, when processed by the vulnerable plugin, can overwrite memory locations beyond the intended buffer boundaries. The vulnerability manifests as a classic buffer overflow condition where attacker-controlled data can overwrite adjacent memory regions, potentially leading to arbitrary code execution within the context of the IrfanView process. This type of flaw aligns with CWE-121, which describes buffer overflow conditions, and CWE-125, which addresses out-of-bounds read vulnerabilities.
The operational impact of CVE-2025-7276 extends beyond simple remote code execution, as it provides attackers with the ability to operate within the privileges of the currently running IrfanView process. This means that successful exploitation could allow attackers to execute malicious code with the same permissions as the user running IrfanView, potentially leading to full system compromise if the application is running with elevated privileges. The requirement for user interaction through visiting malicious web pages or opening malicious files limits the automatic exploitation potential but does not eliminate the threat entirely, as social engineering campaigns can effectively target users to trigger the vulnerability. Attackers could leverage this vulnerability in targeted campaigns against engineering firms, architectural offices, or any organization that regularly handles CAD files, making it particularly attractive for advanced persistent threat actors seeking to establish persistent access within technical environments.
Organizations affected by this vulnerability should prioritize immediate remediation through official software updates provided by IrfanView developers, as the vulnerability affects the CADImage plugin's handling of DXF files. System administrators should implement network-based restrictions to prevent access to known malicious domains that might host exploit payloads, while also monitoring for suspicious file downloads or opening activities. The vulnerability's classification under the ATT&CK framework would place it within the execution and privilege escalation domains, specifically addressing techniques such as command and script interpreter execution and process injection. Additionally, implementing application whitelisting policies that restrict the execution of untrusted DXF files and conducting regular security awareness training for users handling technical documents can significantly reduce the attack surface. Organizations should also consider deploying sandboxing solutions for processing untrusted CAD files to isolate potential exploitation attempts from the main system environment.