Privilege Escalation Vulnerability in Kernel Streaming WOW Thunk Service Driver by Microsoft
CVE-2025-49675

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:
8 July 2025

What is CVE-2025-49675?

A vulnerability exists in the Kernel Streaming WOW Thunk Service Driver that can be exploited by an authorized attacker to elevate their privileges locally. By leveraging the use-after-free condition, the attacker may gain unauthorized access to sensitive system-level operations, potentially compromising the system's security. This flaw necessitates immediate attention to safeguard affected Windows operating systems against local exploitation.

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Affected Version(s)

Windows 10 Version 1507 32-bit Systems 10.0.10240.0 < 10.0.10240.21073

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.8246

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.7558

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

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