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.
Metrics
Affected Vendors & Products
References
History
Wed, 04 Feb 2026 12:15:00 +0000
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Notepad++
Notepad++ notepad++ Notepad-plus-plus Notepad-plus-plus notepad++ Notepad Plus Plus Notepad Plus Plus notepad++ |
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| Vendors & Products |
Notepad++
Notepad++ notepad++ Notepad-plus-plus Notepad-plus-plus notepad++ Notepad Plus Plus Notepad Plus Plus notepad++ |
Tue, 03 Feb 2026 21:15:00 +0000
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ssvc
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Tue, 03 Feb 2026 13:15:00 +0000
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| Description | 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. | |
| Title | Notepad++ < 8.8.9 WinGUp Updater Lacks Update Integrity Verification | |
| Weaknesses | CWE-494 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-02-03T00:50:29.516Z
Updated: 2026-02-03T20:48:02.803Z
Reserved: 2026-02-02T22:25:12.781Z
Link: CVE-2025-15556
Updated: 2026-02-03T20:48:00.188Z
Status : Awaiting Analysis
Published: 2026-02-03T01:15:57.757
Modified: 2026-02-03T16:44:03.343
Link: CVE-2025-15556
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