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Vulnerability DatabaseCVE-2025-15556

CVE-2025-15556: 
Notepad++ vulnerability analysis and mitigation

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.

Source: NVD

Related Notepad++ vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2023-47452HIGH7.8
  • Notepad++Notepad++
  • cpe:2.3:a:notepad-plus-plus:notepad\+\+
NoYesNov 30, 2023
CVE-2023-6401HIGH7.8
  • Notepad++Notepad++
  • cpe:2.3:a:notepad-plus-plus:notepad\+\+
NoYesNov 30, 2023
CVE-2025-15556HIGH7.7
  • Notepad++Notepad++
  • cpe:2.3:a:notepad-plus-plus:notepad\+\+
YesYesFeb 03, 2026
CVE-2026-25926HIGH7.3
  • Notepad++Notepad++
  • cpe:2.3:a:notepad-plus-plus:notepad\+\+
NoYesFeb 19, 2026
CVE-2025-49144HIGH7.3
  • Notepad++Notepad++
  • cpe:2.3:a:notepad-plus-plus:notepad\+\+
NoYesJun 23, 2025

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