Microsoft Defender Portal Spoofing Vulnerability
Vulnerability
A spoofing vulnerability has been identified in the Microsoft 365 Defender Portal. This vulnerability allows for improper neutralization of input during web page generation, potentially leading to cross-site scripting issues. The vulnerability is present in the Microsoft Defender Portal and has been assessed with a CVSS base score of 8.3, indicating a critical severity level.
Impact
Exploitation of this vulnerability could lead to spoofing attacks, allowing an attacker to impersonate another user or entity.
Added: Nov 20, 2025, 11:18 PM
Updated: Nov 20, 2025, 11:18 PM
Vulnerability Rating
Custom Algorithm
spread
0.0impact
1.3exploitability
6.4remediation
0.0relevance
1.0threat
0.0urgency
2.9incentive
1.7Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.