CVE-2025-15556 Notepad++ < 8.8.9 WinGUp Updater Lacks Update Integrity Verification

Notepad++ versions prior to 8.8.9, when using the WinGUp updater, contain an update integrity verification vulnerability where downloaded update metadata and installers are not cryptographically verified. An attacker able to intercept or redirect update traffic can cause the updater to download a...

CVE-2025-15556 Notepad++ < 8.8.9 WinGUp Updater Lacks Update Integrity Verification

Notepad++ versions prior to 8.8.9, when using the WinGUp updater, contain an update integrity verification vulnerability where downloaded update metadata and installers are not cryptographically verified. An attacker able to intercept or redirect update traffic can cause the updater to download a...

CVE-2025-15556

Notepad++ versions prior to 8.8.9, when using the WinGUp updater, contain an update integrity verification vulnerability where downloaded update metadata and installers are not cryptographically verified. An attacker able to intercept or redirect update traffic can cause the updater to download a...

EUVD-2025-206661

Notepad++ versions prior to 8.8.9, when using the WinGUp updater, contain an update integrity verification vulnerability where downloaded update metadata and installers are not cryptographically verified. An attacker able to intercept or redirect update traffic can cause the updater to download a...

CVE-2025-15556 Notepad++ < 8.8.9 WinGUp Updater Lacks Update Integrity Verification

Notepad++ versions prior to 8.8.9, when using the WinGUp updater, contain an update integrity verification vulnerability where downloaded update metadata and installers are not cryptographically verified. An attacker able to intercept or redirect update traffic can cause the updater to download a...

CVE-2025-15556

Notepad++ versions prior to 8.8.9 using the WinGUp updater are affected by an update integrity verification vulnerability: downloaded update metadata and installers are not cryptographically verified. An attacker who can intercept or redirect update traffic can cause the updater to download and e...

Notepad++ 安全漏洞

Notepad++ is an open-source plain-text editor developed by Don Ho of Taiwan, China. Versions of Notepad++ prior to 8.8.9 contained security vulnerabilities. These vulnerabilities stemmed from insufficient integrity verification during updates using the WinGUp updater, which could allow arbitrary...

CVE-2025-15556: Download of Code Without Integrity Check

Notepad++ versions prior to 8.8.9, when using the WinGUp updater, contain an update integrity verification vulnerability where downloaded update metadata and installers are not cryptographically verified. An attacker able to intercept or redirect update traffic can cause the updater to download a...

PT-2026-6334

Name of the Vulnerable Software and Affected Versions BrowserStack Runner versions 0.1.0 through 0.9.5 Notepad++ versions prior to 8.8.2 Description BrowserStack Runner contains a path traversal issue in the default HTTP handler within lib/server.js. This allows unauthenticated network-adjacent...

Notepad++ Updates Delivered Malware After Hosting Provider Breach

A months-long breach allowed Chinese State-sponsored hackers to hijack Notepad++ updates in 2025, exposing users to malware via a compromised hosting provider...

The Chrysalis Backdoor: A Deep Dive into Lotus Blossom’s toolkit

Rapid7 Labs, together with the Rapid7 MDR team, has uncovered a sophisticated campaign attributed to the Chinese APT group Lotus Blossom. Active since 2009, the group is known for its targeted espionage campaigns primarily impacting organizations across Southeast Asia and more recently Central...

Notepad++ Official Update Mechanism Hijacked to Deliver Malware to Select Users

The maintainer of Notepad++ has revealed that state-sponsored attackers hijacked the utility's update mechanism to redirect update traffic to malicious servers instead. "The attack involved an infrastructure-level compromise that allowed malicious actors to intercept and redirect update traffic...

KLA90864 ACE vulnerability in Notepad++

Remote code execution vulnerability was found in Notepad++. Malicious users can exploit this vulnerability to execute arbitrary code. Original advisories Notepad++ Hijacked by State-Sponsored Hackers CVE-2025-15556 Exploitation Public exploits exist for this vulnerability. Related products...

Notepad++ < 8.9.1 Vendor Recommended Security Hardening Update

The version of Notepad++ installed on the remote host is prior to 8.9.1. The vendor has released version 8.9.1 as a recommended security hardening update following a hijacking incident that affected earlier versions. Note that Nessus has not tested for this issue but has instead relied only on th...

VulnCheck KEV: CVE-2025-15556

Notepad++ when using the WinGUp updater, contains a download of code without integrity check vulnerability that could allow an attacker to intercept or redirect update traffic to download and execute an attacker-controlled installer. This could lead to arbitrary code execution with the privileges...

The vulnerability of the PDF, EPUB, MOBI, FB2, CHM, XPS, and DjVu viewing program SumatraPDF lies in the use of an insecure search path, allowing attackers to execute arbitrary code.

The vulnerability of the PDF, EPUB, MOBI, FB2, CHM, XPS, and DjVu viewing program SumatraPDF lies in the use of an unreliable search path during the processing of Advanced Options. Exploiting this vulnerability allows a attacker to execute arbitrary code by sending a specially created malicious...

CVE-2026-23512

SumatraPDF is a multi-format reader for Windows. In 3.5.2 and earlier, there is a Untrusted Search Path vulnerability when Advanced Options setting is trigger. The application executes notepad.exe without specifying an absolute path when using the Advanced Options setting. On Windows, this allows...

CVE-2025-68965

Permission control vulnerability in the Notepad module. Impact: Successful exploitation of this vulnerability may affect service confidentiality...

CVE-2025-68966

Permission control vulnerability in the Notepad module. Impact: Successful exploitation of this vulnerability may affect service confidentiality...

Notepad++ Plugin Persistence

This Metasploit module create persistence by adding a malicious plugin to Notepad++, as it blindly loads and executes DLL from its plugin directory on startup, meaning that the payload will be executed every time Notepad++ is launched...