EIP-2026-117586

PRE-CVE

Microsoft Windows XP/2000 - PostThreadMessage() Arbitrary Process Killing

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-117586. PoCs published by Brett Moore.

AI-analyzed exploit summary This exploit demonstrates a vulnerability in Microsoft Windows where a process can be terminated by sending a WM_QUIT message via PostThreadMessage() without proper origin verification. The PoC targets the Windows Task Manager by default but can be adapted to other processes.

Description

Microsoft Windows XP/2000 - PostThreadMessage() Arbitrary Process Killing

Exploits (1)

exploitdb WORKING POC VERIFIED
by Brett Moore · clocalwindows
https://www.exploit-db.com/exploits/23210

This exploit demonstrates a vulnerability in Microsoft Windows where a process can be terminated by sending a WM_QUIT message via PostThreadMessage() without proper origin verification. The PoC targets the Windows Task Manager by default but can be adapted to other processes.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Windows (unspecified version)
No auth needed
Prerequisites: Target process must have a message queue · Attacker must have local access to the system
devstral-2 · analyzed Feb 19, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026