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-2026-20841-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|...

forensicscanner

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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-2025-49144_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...

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...

CVE-2026-48800-PoC

CVE-2026-48800 — Notepad++ Arbitrary Code Execution PoC Severity: High | Affected: Notepad++ ≤ 8.9.6 | Patched: v8.9.6.1 A PoC script for CVE-2026-48800, an arbitrary code execution vulnerability in Notepad++ ≤ 8.9.6 via shortcuts.xml. For full technical details, see the official security advisor...

notepad_CVE_2026_20841

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CVE-2026-20841

CVE-2026-20841 PoC PoC of the "Windows Notepad RCE" vulnerability. Disclaimers 1. I am NOT the one who discovered this vulnerability. Props to the original authors listed on the official disclosure page. I just recreated the PoC according to the description. 2. I personally don't think this...

PoC-CVE-2026-20841

PoC CVE-2026-20841 Description This project is a simple Proof of Concept PoC regarding Windows Notepad vulnerability about "remote code execution". Attackers have the ability to build a special .md file and by tricking users with Social Engineering skills into clicking the link within the .md fil...

CVE-2026-20841

CVE-2026-20841 This content corresponds to a part of what is provided through the Monthly Report for PatchPoint subscribers. Overview Microsoft disclosed a patch for an RCE vulnerability in Notepad in February 2026. The vulnerability is a Command Injection vulnerability that occurs in Notepad,...

CVE-2026-3008

CVE-2026-3008 — Notepad++ 8.9.3 Format String Injection via nativeLang.xml Vulnerability When a search operation produces results, sub1400916C0 formats a hit count label by retrieving a localized string from nativeLang.xml and passing it directly as the format string to wsprintfW: sub140099E60v37...

CVE-2026-20841_notepad_analysis

Purpose Investigate the Microsoft Notepad RCE vulnerability CVE-2026-20841, perform binary analysis, and create a PoC exploit for learning purposes. Role Assignment Launch an Agent Team to execute the role assignment I have in mind. Binary Hunter: Collects binaries before and after the patch is...

CVE-2026-20841-PoC

CVE-2026-20841-PoC Proof of Concept for CVE-2026-20841 CVE-2026-20841 – Details CVE-2026-20841 is a vulnerability affecting Microsoft Notepad, where specially crafted input can trigger unintended command execution. The issue occurs due to improper handling of certain file content or execution...