{
  "id": "cve-2025-15556",
  "cveID": "CVE-2025-15556",
  "vendor": "Notepad++",
  "product": "Notepad++",
  "vulnerabilityName": "Notepad++ Download of Code Without Integrity Check Vulnerability",
  "shortDescription": "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.",
  "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.",
  "dateAdded": "2026-02-12",
  "dueDate": "2026-03-05",
  "knownRansomware": false,
  "cwes": [
    "CWE-494"
  ],
  "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",
  "sources": [
    {
      "label": "NVD",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-15556"
    },
    {
      "label": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
    },
    {
      "label": "notepad-plus-plus.org",
      "url": "https://notepad-plus-plus.org/news/clarification-security-incident/"
    },
    {
      "label": "community.notepad-plus-plus.org",
      "url": "https://community.notepad-plus-plus.org/topic/27298/notepad-v8-8-9-vulnerability-fix"
    },
    {
      "label": "nvd.nist.gov",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-15556"
    }
  ],
  "cvss": {
    "score": 7.7,
    "severity": "HIGH",
    "version": "4.0",
    "vector": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  },
  "epss": {
    "score": 0.0171,
    "percentile": 0.75962
  },
  "timeline": [
    {
      "date": "2026-02-12",
      "event": "Added to the CISA KEV catalog"
    },
    {
      "date": "2026-03-05",
      "event": "CISA remediation due date (BOD 22-01)"
    }
  ],
  "status": "past due"
}