Elevation of Privilege Vulnerability in Microsoft Windows Authentication
CVE-2025-59278

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1809
Windows Server 2019
Windows Server 2019 (server Core Installation)
Windows Server 2022
Vendor
CVE Published:
14 October 2025

What is CVE-2025-59278?

An issue exists in Microsoft Windows that arises from improper validation of certain input types in the Windows Authentication Methods. This flaw can be exploited by an authorized attacker to gain elevated privileges within the local environment, potentially compromising the system's security integrity.

Affected Version(s)

Windows 10 Version 1507 32-bit Systems 10.0.10240.0 < 10.0.10240.21161

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.8519

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.7919

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-59278 : Elevation of Privilege Vulnerability in Microsoft Windows Authentication