CVE-2018-8134

HIGH

Windows Kernel API - Elevation of Privilege via Permission Enforcement

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-8134. PoCs published by Google Security Research.

AI-analyzed exploit summary The exploit demonstrates a token trust SID access check bypass in Windows, allowing a non-admin process to elevate privileges by duplicating a protected process token and setting it as the primary token of a new process. This bypasses access checks for trust labels, such as those protecting critical system objects like \KnownDlls.

Description

An elevation of privilege vulnerability exists in the way that the Windows Kernel API enforces permissions, aka "Windows Elevation of Privilege Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · textlocalwindows
https://www.exploit-db.com/exploits/44630

The exploit demonstrates a token trust SID access check bypass in Windows, allowing a non-admin process to elevate privileges by duplicating a protected process token and setting it as the primary token of a new process. This bypasses access checks for trust labels, such as those protecting critical system objects like \KnownDlls.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: Windows 10 1709 (and RS4 builds)
Auth required
Prerequisites: Ability to create a protected process (e.g., werfaultsecure.exe) · PROCESS_QUERY_LIMITED_INFORMATION access to the protected process · SeImpersonatePrivilege (for related impersonation issue)
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (4)

Core 4
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1040849
Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/44630/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/104041

Scores

CVSS v3 7.0
EPSS 0.0305
EPSS Percentile 85.8%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

Status published
Products (12)
microsoft/windows_10
microsoft/windows_10 1607
microsoft/windows_10 1703
microsoft/windows_10 1709
microsoft/windows_10 1803
microsoft/windows_7
microsoft/windows_8.1
microsoft/windows_rt_8.1
microsoft/windows_server_2012 r2
microsoft/windows_server_2016
... and 2 more
Published May 09, 2018
Tracked Since Feb 18, 2026