{"id":"CVE-2026-64955","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-64955","generatedAt":"2026-10-28T04:16:56.355Z","title":"When Microsoft Excel imports a CSV file, it executes cells beginning with certain characters as formulas, giving such CSV files arbitrary execution.","description":"When Microsoft Excel imports a CSV file, it executes cells beginning with certain characters as formulas, giving such CSV files arbitrary execution. \n\nVelociraptor fails to sanitize such cells when exporting to CSV from various places such as the GUI, offline collector or data exports.\n\nIt is not clear if the vulnerability is actually in Microsoft Excel treating a CSV data file as executable content, or if Velociraptor should be sanitizing the data to prevent Excel from executing it. However, since this is such a common use case for Velociraptor we decided to highlight it in an advisory.","published":"2026-08-12T10:17:20.000Z","lastModified":"2026-10-24T16:10:00.000Z","status":"Awaiting Analysis","sourceIdentifier":"cve@rapid7.com","cvss":{"version":"3.1","score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N"},"cwe":["CWE-1236"],"affected":[],"epss":{"score":0.00364,"percentile":0.30082,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.36%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://docs.velociraptor.app/announcements/advisories/cve-2026-64955/","source":"cve@rapid7.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64955","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}