{"schema":"threatline.record/2","record":{"id":"CVE-2025-15556","aliases":[],"summary":"Notepad++ Download of Code Without Integrity Check Vulnerability","details":"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.","categories":["Unclassified"],"product":"Notepad++","vendor":"Notepad++","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-15556","source_modified_at":"2026-03-05T01:29:51.538Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"notepad-plus-plus","vendor":"notepad-plus-plus","versions":[{"lessThan":"8.8.9","status":"affected","version":"0","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2025-15556","source_modified_at":"2026-03-05T01:29:51.538Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"notepad-plus-plus","ecosystem":null},"version":"8.8.9","basis":"first unaffected version stated in the CVE record"}],"cvss":7.7,"severity":"High","kev":{"listed":true,"date_added":"2026-02-12","due_date":"2026-03-05","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.01772,"percentile":0.78006,"score_date":"2026-10-23"},"published_at":"2026-02-03T00:50:29.516Z","modified_at":"2026-03-05T01:29:51.538Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2025-15556","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-03-05T01:29:51.538Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2025-15556","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","EPSS"],"references":[{"url":"https://notepad-plus-plus.org/news/clarification-security-incident/","source":"CISA KEV"},{"source":"CVE List","url":"https://community.notepad-plus-plus.org/topic/27298/notepad-v8-8-9-vulnerability-fix","tags":["release-notes","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-15556","source":"CISA KEV"},{"source":"CVE List","url":"https://notepad-plus-plus.org/news/hijacked-incident-info-update/","tags":["vendor-advisory"]},{"source":"CVE List","url":"https://github.com/notepad-plus-plus/notepad-plus-plus/commit/bcf2aa68ef414338d717e20e059459570ed6c5ab","tags":["patch"]},{"source":"CVE List","url":"https://github.com/notepad-plus-plus/wingup/commit/ce0037549995ed0396cc363544d14b3425614fdb","tags":["patch"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/notepad-plus-plus-wingup-updater-lacks-update-integrity-verification","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-15556","tags":["government-resource"]},{"source":"CVE List","url":"https://notepad-plus-plus.org//news//clarification-security-incident/","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"no","technical_impact":"total","assessed_at":"2026-02-13T04:56:27.295409Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-03-05T01:29:51.538Z","content_hash":"191915de731f460c2a4105ca51d5290eda0088a4c82cd08cdda7ca80a83ed0ed"}}