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.

The problem is a Divide by Zero bug in the ShouldPadFile() function.

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Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

Usually the server will restart after the crash. The user should then export the file without the "Expand Sparse Files" option.

History

Wed, 12 Aug 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 12 Aug 2026 10:15:00 +0000

Type Values Removed Values Added
Description 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. The problem is a Divide by Zero bug in the ShouldPadFile() function.
Title Velociraptor DoS triggered by Divide by Zero panic
Weaknesses CWE-369
References
Metrics cvssV3_1

{'score': 3.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: rapid7

Published:

Updated: 2026-08-12T12:29:02.448Z

Reserved: 2026-07-21T08:32:47.510Z

Link: CVE-2026-64951

cve-icon Vulnrichment

Updated: 2026-08-12T12:28:59.332Z

cve-icon NVD

Status : Received

Published: 2026-08-12T10:17:20.063

Modified: 2026-08-12T13:17:23.440

Link: CVE-2026-64951

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-12T12:00:03Z

Weaknesses