CVE-2025-62459 is a high-severity vulnerability in the Microsoft Defender Portal that allows spoofing attacks. It is categorized under CWE-79, indicating a cross-site scripting (XSS) issue. The vulnerability has a CVSS 3.1 score of 8.3, reflecting its potential to impact confidentiality, integrity, and availability. No affected software versions or patches are currently specified. There is no indication of exploitation in the wild at this time.