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CVE-2025-21396— Microsoft Account Elevation of Privilege Vulnerability

Quick assessment

Affected
Microsoft Microsoft Account
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Account是美国微软（Microsoft）公司的一个账户服务。 Microsoft Account存在安全漏洞，该漏洞源于允许未经授权的攻击者通过网络提升权限。

CVSS 8.2 · High EPSS 0.70% · P50

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
Microsoft Microsoft Account - affected
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I. Basic Information for CVE-2025-21396

Vulnerability Information
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Vulnerability Title
Microsoft Account Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Missing authorization in Microsoft Account allows an unauthorized attacker to elevate privileges over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Account 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Account是美国微软（Microsoft）公司的一个账户服务。 Microsoft Account存在安全漏洞，该漏洞源于允许未经授权的攻击者通过网络提升权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Microsoft Account - -

II. Public POCs for CVE-2025-21396

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III. Intelligence Information for CVE-2025-21396

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Vendor Advisories for CVE-2025-21396 (1)

IV. Related Vulnerabilities

Same product: Microsoft Account
Same vendor: Microsoft
Same weakness: CWE-862

V. Comments for CVE-2025-21396

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