Defender for Endpoint and Antivirus
CVE-2025-62459: Microsoft Defender Portal Spoofing Vulnerability
Microsoft Defender Portal Spoofing Vulnerability
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityHIGHCVSS 3.1 8.3
EPSS0.31%Chance of exploitation in 30 days
Public exploitNot tracked
FixNot yet
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Microsoft 365 Defender Portal - | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
Microsoft Defender Portal Spoofing Vulnerability
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 11 Oct 2026.