CVE-2025-7306: 
IrfanView vulnerability analysis and mitigation

IrfanView CADImage Plugin contains a memory corruption vulnerability in the DWG file parsing functionality (CVE-2025-7306). The vulnerability was discovered in early 2025 and publicly disclosed on July 8th, 2025. This security flaw affects IrfanView CADImage Plugin installations up to version 4.72 for both x86 and x64 architectures (Zero Day Initiative).

The vulnerability stems from improper validation of user-supplied data during the parsing of DWG files, which can result in a memory corruption condition (CWE-119). The vulnerability has received a CVSS v3.0 base score of 7.8 (HIGH) with the following vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. This indicates that while local access and user interaction are required, the vulnerability can lead to high impacts on confidentiality, integrity, and availability (Zero Day Initiative).

If successfully exploited, this vulnerability allows attackers to execute arbitrary code in the context of the current process. The high severity rating indicates potential complete compromise of the affected system's confidentiality, integrity, and availability. However, user interaction is required as 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 update to this version or newer to mitigate the risk (Zero Day Initiative).