Notepad-8.9.6-PoC

Notepad++ PoCs CVE-2026-48770 / CVE-2026-48778 / CVE-2026-48800 Proof-of-concept scripts for three vulnerabilities in Notepad++ = 8.9.6, patched in v8.9.6.1 2026-05-26. Vulnerabilities CVE| Type| CVSS| Impact ---|---|---|--- CVE-2026-48770| OOB Read via WMCOPYDATA| 5.0| DoS / Crash CVE-2026-48778...

CVE-2023-40031

CVE-2023-40031 Analysis and Reproduction of notepad++ Heap Buffer Overflow Vulnerability CVE-2023-40031 Vulnerability Overview Notepad++ is a well-known open-source code editor that runs on Windows and supports multiple programming languages. Recently, security researchers examined Notepad++ and...

CVE-2026-48778

CVE-2026-48778 POC Notepad++ RCE via config.xml commandLineInterpreter Usage .\CVE-2026-48778.exe calc.exe Demo https://github.com/user-attachments/assets/79ec82c9-ab37-4923-b62d-325710095e86 Vulnerability Summary Package| Affected versions| Patched versions ---|---|--- Notepad++| = v8.9.6|...

CVE-2026-20841

🛡️ CVE-2026-20841 - Windows Notepad Security Test Tool ⚠️ What is CVE-2026-20841? CVE-2026-20841 is a known security weakness in the Windows Notepad application. It affects the markdown feature, which lets Notepad display formatted text with clickable links. This weakness happens because the...

CVE-2026-52886

Path Traversal: startswith Prefix Check Bypass Notepad++ — Arbitrary File Read viasession.xml backupFilePath Traversal Advisory GHSA: GHSA-rqfm-pw34-r7j6 CVE: CVE-2026-52886 Severity: Moderate Affected: v8.9.6.4 Patched: v8.9.7 Patch Commit: 7e66f36 Affected File: PowerEditor/src/Notepadplus.cpp...

CVE-2026-20841-PoC

It is unclear whether this is the correct PoC trigger method; therefore, it is provided for reference only. CVE-2026-20841 - Windows notepad.exe RCE Exploitation condition: Notepad Version 11.2510 step 1. step 2...

forensicscanner

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notepad-v8.8.1-LPE-CVE-

notepad-v8.8.1-LPE-CVE- CVE-2025-49144 Notepad++ v8.8.1 SYSTEM-level POC 📌 CVE-2025-49144 is a high-severity local privilege escalation vulnerability found in the Notepad++ v8.8.1 and prior version installers. This vulnerability stems from uncontrolled executable search path behavior during...

CVE-2025-49144_PoC

CVE-2025-49144PoC 📌 CVE-2025-49144 is a high-severity local privilege escalation vulnerability found in the Notepad++ v8.8.1 and prior version installers. This vulnerability stems from uncontrolled executable search path behavior during installation, allowing a local attacker to gain SYSTEM-level...

CVE-2025-56383-Proof-of-Concept

Notepad++ v8.8.3 has a DLL hijacking vulnerability, which can replace the original DLL file to execute malicious code. The example method is as follows: Please note that the following demonstration uses npp.8.8.3.Installer.x64.exe to install Notepad++for testing, but in reality, any installed...

notepadpp-supply-chain-iocs

Notepad++ Supply Chain Attack — IoC Repository CVE-2025-15556 | Lotus Blossom / Raspberry Typhoon | June – December 2025 Overview This repository contains a comprehensive, consolidated collection of Indicators of Compromise IoCs related to the Notepad++ supply chain attack disclosed on February 2...

CVE-2025-49144-PoC

CVE-2025-49144 I write a blog about this vulnerability here: https://havertz2110.github.io/posts/cve-reproduce-cve-2025-49144-notepad++/...

CVE-2026-20841-PoC

CVE-2026-20841 - Windows Notepad App Remote Code Execution Vulnerability Vulnerability Overview Field| Detail ---|--- CVE ID| CVE-2026-20841 Title| Windows Notepad App Remote Code Execution Vulnerability Impact| Remote Code Execution Max Severity| Important CVSS v3.1 Base / Temporal| 8.8 / 7.7 CV...

CVE-2026-52885

TOCTOU: HMAC Checks Disk, Executes from Memory Notepad++ v8.9.6.2 — Attacker-Controlled UserCommand Execution via HMAC Race Condition Advisory | ---|--- GHSA| GHSA-qm4c-qg8p-qfcr CVE| CVE-2026-52885 Severity| High Affected| v8.9.6.2 Patched| v8.9.6.4 Patch Commit| 4f7563c Affected File|...

CVE-2026-20841

CVE-2026-20841 - Windows Notepad Remote Code Execution RCE Security Research & Technical Analysis Repository ⚠️ This repository is intended for educational, defensive, and research purposes only. 📖 Overview CVE-2026-20841 is a critical Remote Code Execution RCE vulnerability affecting Microsoft...

CVE-2025-15556-Notepad-WinGUp-Updater-RCE

Affected Software: Notepad++ versions prior to 8.8.9 using the WinGUp updater. Vulnerability Type: Update integrity verification bypass leading to arbitrary code execution. Description: The WinGUp updater fails to properly verify the integrity of update metadata, allowing an attacker who can...

CVE-2025-56383

Vulnerability Attack Type: DLL Hijacking DLL Hijacking Target Application: Notepad++ Method: The NppExport.dll file is loaded by Notepad++ from the working directory Implementation The malicious DLL contains: Exported functions of the original library to ensure compatibility Reverse shell...

CVE-2026-20841

CVE-2026-20841 - Windows Notepad RCE PoC for a remote code execution flaw in Windows Notepad's markdown renderer. The markdown engine does not restrict URL protocols, allowing arbitrary protocol handlers to be triggered via clickable links. Disclaimers 1. Not my discovery. Credit goes to the...

CVE-2026-20841

CVE-2026-20841 - Windows Notepad RCE PoC for a remote code execution flaw in Windows Notepad's markdown renderer. The markdown engine does not restrict URL protocols, allowing arbitrary protocol handlers to be triggered via clickable links. Disclaimers 1. Not my discovery. Credit goes to the...

CVE-2026-48778-PoC

CVE-2026-48778 — Notepad++ Arbitrary Code Execution PoC Severity: High CVSS 7.8 | Affected: Notepad++ ≤ 8.9.6 | Patched: v8.9.6.1 A PoC script for CVE-2026-48778, an arbitrary code execution vulnerability in Notepad++ ≤ 8.9.6. For full technical details, see the official security advisory. Usage...