Elevation of Privilege Vulnerability in Microsoft Account by Microsoft
CVE-2025-21396
Summary
An elevation of privilege vulnerability exists in Microsoft Account due to missing authorization checks. This flaw enables an unauthorized attacker to exploit this weakness over a network, potentially leading to unauthorized access and control over user accounts.
Affected Version(s)
Microsoft Account Unknown
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News Articles
Microsoft fixes CVSS 9.9 vulnerability in Azure AI Face service
The flaw enabled authentication bypass by spoofing, with a proof-of-concept exploit available.

Critical New Microsoft Account Takeover Bypassed Authentication
Microsoft has confirmed that Microsoft Accounts have been left with missing authentication mechanisms that could lead to a hacker takeover. Here’s what you need to know.
Microsoft Patches Critical Azure AI Face Service Vulnerability with CVSS 9.9 Score
Microsoft fixes CVE-2025-21415 (CVSS 9.9) and CVE-2025-21396 flaws, addressing privilege escalation risks in Azure AI Face Service and Microsoft Accou
References
CVSS V3.1
Timeline
- 📰
First article discovered by The Hacker News
Vulnerability published