CVE-2025-7321: 
IrfanView vulnerability analysis and mitigation

A remote code execution vulnerability (CVE-2025-7321) was discovered in IrfanView CADImage Plugin, affecting versions up to (excluding) 4.72. The vulnerability was reported on February 28, 2025, and publicly disclosed on July 8, 2025. The issue affects the DWG file parsing functionality in the CADImage Plugin for IrfanView (Zero Day Initiative).

The vulnerability exists within the parsing of DWG files and stems from improper validation of user-supplied data, which can result in a memory corruption condition. The vulnerability has been assigned a CVSS v3.0 base score of 7.8 (High) with the vector string AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. The flaw is classified as CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) (Zero Day Initiative).

An attacker who successfully exploits this vulnerability can execute arbitrary code in the context of the current process. The attack requires user interaction, specifically that the target must visit a malicious page or open a malicious file (Zero Day Initiative).

The vulnerability has been fixed in IrfanView CADImage Plugin version 4.72. Users are advised to upgrade to this version or later to mitigate the risk (Zero Day Initiative).

The vulnerability was discovered by security researcher Rocco Calvi (@TecR0c) with TecSecurity and was coordinated through the Zero Day Initiative's disclosure program (Zero Day Initiative).