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Generated remediation guidance and an executive summary. No account required.
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 and execute an attacker-controlled installer, resulting in arbitrary code execution with the privileges of the user.
Use CWE-494, Notepad-Plus-Plus vendor hub and Notepad\+\+ product page to widen CVE-2025-15556 into its surrounding weakness, vendor, and product context.