EIP-2026-117701

PRE-CVE

Notepad++ CCompletion Plugin 1.19 - Local Stack Buffer Overflow

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-117701. PoCs published by tishion.

AI-analyzed exploit summary The exploit demonstrates a stack buffer overflow in Notepad++ 6.5.2 with the CCompletion plugin (v1.19 Unicode) via lstrcpyW misuse, leading to local code execution. The PoC triggers a crash and executes shellcode to display a message box, bypassing DEP by leveraging a non-ASLR module.

Description

Notepad++ CCompletion Plugin 1.19 - Local Stack Buffer Overflow

Exploits (1)

exploitdb WORKING POC VERIFIED
by tishion · textlocalwindows
https://www.exploit-db.com/exploits/31895

The exploit demonstrates a stack buffer overflow in Notepad++ 6.5.2 with the CCompletion plugin (v1.19 Unicode) via lstrcpyW misuse, leading to local code execution. The PoC triggers a crash and executes shellcode to display a message box, bypassing DEP by leveraging a non-ASLR module.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Notepad++ 6.5.2 with CCompletion plugin v1.19 Unicode
No auth needed
Prerequisites: Notepad++ 6.5.2 installed · CCompletion plugin v1.19 Unicode installed · DEP disabled for the application or system
mistral-large-3 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026