{"id":"CVE-2026-85995","state":"PUBLISHED","title":"Notepad++: Authenticode verification bypass allows modified updater execution","description":"Notepad++ is a free and open-source source code editor. From 8.9.7 until 8.9.8, the Notepad++ updater and signature verification path can accept a modified GUP.exe file whose embedded certificate metadata remains present even though its Authenticode digest is invalid. An attacker who can replace or plant the updater-related file can cause Notepad++ to launch attacker-modified code when a user triggers the updater path, but the issue does not provide remote code execution by itself. This issue is fixed in version 8.9.8.","publishedAt":"2026-09-22T17:15:05.375Z","updatedAt":"2026-09-22T17:43:17.068Z","severity":{"score":7.3,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["notepad-plus-plus notepad-plus-plus"],"affected":[{"vendor":"notepad-plus-plus","product":"notepad-plus-plus","versions":[{"version":"< 8.9.8","status":"affected"}]}],"references":["https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-cx87-7hhq-m2j3","https://github.com/notepad-plus-plus/notepad-plus-plus/commit/9edf40f725ce62b26c454905e39f0f7fdbbb3ffa","https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.8","https://notepad-plus-plus.org/news/v898-released"],"weaknesses":["CWE-347"],"ingestedAt":"2026-10-29T20:13:15.269Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/85xxx/CVE-2026-85995.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-85995","state":"PUBLISHED","datePublished":"2026-09-22T17:15:05.375Z","dateUpdated":"2026-09-22T17:43:17.068Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-09-04T19:17:36.245Z"},"containers":{"cna":{"title":"Notepad++: Authenticode verification bypass allows modified updater execution","descriptions":[{"lang":"en","value":"Notepad++ is a free and open-source source code editor. From 8.9.7 until 8.9.8, the Notepad++ updater and signature verification path can accept a modified GUP.exe file whose embedded certificate metadata remains present even though its Authenticode digest is invalid. An attacker who can replace or plant the updater-related file can cause Notepad++ to launch attacker-modified code when a user triggers the updater path, but the issue does not provide remote code execution by itself. This issue is fixed in version 8.9.8."}],"affected":[{"vendor":"notepad-plus-plus","product":"notepad-plus-plus","versions":[{"version":"< 8.9.8","status":"affected"}]}],"references":[{"url":"https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-cx87-7hhq-m2j3","name":"https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-cx87-7hhq-m2j3","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/notepad-plus-plus/notepad-plus-plus/commit/9edf40f725ce62b26c454905e39f0f7fdbbb3ffa","name":"https://github.com/notepad-plus-plus/notepad-plus-plus/commit/9edf40f725ce62b26c454905e39f0f7fdbbb3ffa","tags":["x_refsource_MISC"]},{"url":"https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.8","name":"https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.8","tags":["x_refsource_MISC"]},{"url":"https://notepad-plus-plus.org/news/v898-released","name":"https://notepad-plus-plus.org/news/v898-released","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-347","lang":"en","description":"CWE-347: Improper Verification of Cryptographic Signature","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-22T17:15:05.375Z"},"source":{"advisory":"GHSA-cx87-7hhq-m2j3","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-22T17:35:40.027541Z","id":"CVE-2026-85995","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-22T17:43:17.068Z"}}]}}}