Out of Bound Write on WibuKey for Windows

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-84854
StatePUBLISHED
Assignerwibu
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-06 10:16:54 UTC
Updated2026-10-07 04:18:10 UTC
DescriptionIn the WibuKey driver for Windows below Version 6.72, insufficient validation of user input when calculating the size of a kernel buffer could cause small amounts of data to be written outside the intended kernel buffer. This can lead to a system crash. Under unfavorable circumstances, adjacent kernel memory may be modified.

Risk And Classification

Primary CVSS: v3.1 7 HIGH from 2fc02b1f-71e7-4514-a878-169626f68903

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

Problem Types: CWE-787 | CWE-787 CWE-787 Out-of-bounds write

VersionSourceTypeScoreSeverityVector
3.12fc02b1f-71e7-4514-a878-169626f68903Secondary7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wibu-systems-ag Wibukey affected 6.72 custom Not specified

References

ReferenceSourceLinkTags
cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-100... 2fc02b1f-71e7-4514-a878-169626f68903 cdn.wibu.com
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: 정기현(haro001) (en)

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