Velociraptor DoS triggered by Divide by Zero panic

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-64951
StatePUBLISHED
Assignerrapid7
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-12 10:17:20 UTC
Updated2026-08-12 13:17:23 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 3.5 LOW from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

EPSS: 0.002810000 probability, percentile 0.204530000 (date 2026-08-12)

Problem Types: CWE-369 | CWE-369 CWE-369 Divide by zero

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3.5LOWCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
3.1CNACVSS3.5LOWCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Rapid7 Velociraptor affected 0.77.2 semver Not specified

References

ReferenceSourceLinkTags
docs.velociraptor.app/announcements/advisories/cve-2026-64951 [email protected] docs.velociraptor.app
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Tristan Madani (Talence Security) (en)

Additional Advisory Data

Workarounds

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

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