{"cvss":0.0,"datePublished":"2026-02-12","dateUpdated":"2026-02-12","description":"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.","dueDate":"2026-03-05","id":"CVE-2025-15556","kev_catalogs":["cisa"],"knownRansomwareCampaignUse":"Unknown","notes":"https://notepad-plus-plus.org/news/clarification-security-incident/ ; https://community.notepad-plus-plus.org/topic/27298/notepad-v8-8-9-vulnerability-fix ; https://nvd.nist.gov/vuln/detail/CVE-2025-15556","product":"Notepad++","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","severity":"HIGH","source":"cisa_known_exploited","title":"Notepad++ Download of Code Without Integrity Check Vulnerability","vendor":"Notepad++"}