CVE-2025-62459 HIGH

CVE-2025-62459: Microsoft Defender Portal Spoofing Vulnerability

Vendor Microsoft
Product Microsoft 365 Defender Portal
Weakness CWE-79 · XSS
Published November 20, 2025
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

8.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C

What the vulnerability does

01Description

Microsoft Defender Portal Spoofing Vulnerability

Key dates

02Disclosure timeline

November 20, 2025 CVE published
February 26, 2026 Record updated

Related vulnerabilities

04Related CVE

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