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 and execute an attacker-controlled installer, resulting in arbitrary code execution with the privileges of the user.

CVSS

No CVSS.

References

Link	Resource
https://community.notepad-plus-plus.org/topic/27298/notepad-v8-8-9-vulnerability-fix
https://github.com/notepad-plus-plus/notepad-plus-plus/commit/bcf2aa68ef414338d717e20e059459570ed6c5ab
https://github.com/notepad-plus-plus/wingup/commit/ce0037549995ed0396cc363544d14b3425614fdb
https://notepad-plus-plus.org/news/hijacked-incident-info-update/
https://www.vulncheck.com/advisories/notepad-plus-plus-wingup-updater-lacks-update-integrity-verification

Configurations

No configuration.

History

No history.

Information

Published : 2026-02-03 01:15

Updated : 2026-02-03 16:44

NVD link : CVE-2025-15556

Mitre link : CVE-2025-15556

CVE.ORG link : CVE-2025-15556

JSON object : View

Products Affected

No product.

CWE

CWE-494

Download of Code Without Integrity Check

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