CVE-2025-15556 — Notepad++ Download of Code Without Integrity Check Vulnerability
2026-02-12 • CISA Known Exploited Vulnerability
[event] 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 of the user.
> AFFECTED SOFTWARE
| Field | Value |
|---|---|
| Vendor | Notepad++ |
| Product | Notepad++ |
| CWE | CWE-494 |
| CVE ID | CVE-2025-15556 |
| Date Added | 2026-02-12 |
| Due Date | 2026-03-05 |
| Ransomware Campaign | Unknown |
> MITIGATION
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Due Date: 2026-03-05