{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64951", "assignerOrgId": "9974b330-7714-4307-a722-5648477acda7", "state": "PUBLISHED", "assignerShortName": "rapid7", "dateReserved": "2026-07-21T08:32:47.510Z", "datePublished": "2026-08-12T09:49:25.635Z", "dateUpdated": "2026-08-12T12:29:02.448Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "9974b330-7714-4307-a722-5648477acda7", "shortName": "rapid7", "dateUpdated": "2026-08-12T09:49:25.635Z"}, "title": "Velociraptor DoS triggered by Divide by Zero panic", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-369", "description": "CWE-369 Divide by zero", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-153", "descriptions": [{"lang": "en", "value": "CAPEC-153 Input Data Manipulation"}]}], "affected": [{"vendor": "Rapid7", "product": "Velociraptor", "repo": "https://github.com/Velocidex/velociraptor/", "versions": [{"status": "affected", "version": "0", "lessThan": "0.77.2", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A rogue Velociraptor client can upload a malformed sparse file such that if the GUI attempts to expand the file, a panic occurs which may crash the server process.\n\nThe problem is a Divide by Zero bug in the\u00a0ShouldPadFile() function.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>A rogue Velociraptor client can upload a malformed sparse file such that if the GUI attempts to expand the file, a panic occurs which may crash the server process.</p><div>The problem is a Divide by Zero bug in the&nbsp;ShouldPadFile() function.</div>"}]}], "references": [{"url": "http://docs.velociraptor.app/announcements/advisories/cve-2026-64951/"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW", "baseSeverity": "LOW", "baseScore": 3.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L"}}], "configurations": [{"lang": "en", "value": "The attacker needs to obtain deployment credentials to be able to start a rogue client and upload a specially crafted sparse file.To successfully crash the server the Velociraptor user needs to export the file using the \"Expand Sparse Files\" option. If the option is not used the crash is not triggered.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "The attacker needs to obtain deployment credentials to be able to start a rogue client and upload a specially crafted sparse file.<div>To successfully crash the server the Velociraptor user needs to export the file using the \"Expand Sparse Files\" option. If the option is not used the crash is not triggered.</div>"}]}], "workarounds": [{"lang": "en", "value": "Usually the server will restart after the crash. The user should then export the file without the \"Expand Sparse Files\" option.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Usually the server will restart after the crash. The user should then export the file without the \"Expand Sparse Files\" option.&nbsp;"}]}], "credits": [{"lang": "en", "value": "Tristan Madani (Talence Security)", "type": "finder"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.4"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-12T12:28:55.260841Z", "id": "CVE-2026-64951", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-12T12:29:02.448Z"}}]}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Velociraptor", "repo": "https://github.com/Velocidex/velociraptor/", "vendor": "Rapid7", "versions": [{"lessThan": "0.77.2", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "cve@rapid7.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A rogue Velociraptor client can upload a malformed sparse file such that if the GUI attempts to expand the file, a panic occurs which may crash the server process.\n\nThe problem is a Divide by Zero bug in the\u00a0ShouldPadFile() function."}], "id": "CVE-2026-64951", "lastModified": "2026-08-12T10:17:20.063", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.5, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 1.4, "source": "cve@rapid7.com", "type": "Secondary"}]}, "published": "2026-08-12T10:17:20.063", "references": [{"source": "cve@rapid7.com", "url": "http://docs.velociraptor.app/announcements/advisories/cve-2026-64951/"}], "sourceIdentifier": "cve@rapid7.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-369"}], "source": "cve@rapid7.com", "type": "Secondary"}]}

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{"created": "2026-08-12T12:00:03.999936+00:00", "updated": "2026-08-12T12:00:03.999942+00:00", "vendors": []}