EIP-2026-117573

PRE-CVE

Microsoft Windows NT 4.0 - MSIEXEC Registry Permissions

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-117573. PoCs published by Mnemonix.

AI-analyzed exploit summary This exploit leverages weak registry permissions to escalate privileges by replacing the DLL loaded by the Microsoft Installer Service (MSIEXEC). A malicious DLL exporting DllGetClassObject() is used to spawn a SYSTEM-level command shell when an MSI file is executed.

Description

Microsoft Windows NT 4.0 - MSIEXEC Registry Permissions

Exploits (1)

exploitdb WORKING POC VERIFIED
by Mnemonix · clocalwindows
https://www.exploit-db.com/exploits/20317

This exploit leverages weak registry permissions to escalate privileges by replacing the DLL loaded by the Microsoft Installer Service (MSIEXEC). A malicious DLL exporting DllGetClassObject() is used to spawn a SYSTEM-level command shell when an MSI file is executed.

Classification
Working Poc 90%
Attack Type
Lpe
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Windows NT (Microsoft Installer Service)
Auth required
Prerequisites: Local user access · Ability to modify registry keys · Execution of an MSI file
devstral-2 · analyzed Feb 19, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026