Missing Sanity Checks for Buffer Lengths

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-81575
StatePUBLISHED
Assignerwibu
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-27 10:16:40 UTC
Updated2026-08-27 10:16:40 UTC
DescriptionIf configured as a server, CodeMeter Runtime before versions 8.41a and 9.10 accepts requests with opcode 0x5e, which contain the data length and the data itself. Missing bounds checking on the data length value can lead to out of bounds reads, causing a segmentation fault that ultimately crashes the CodeMeter Runtime.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from 2fc02b1f-71e7-4514-a878-169626f68903

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

Problem Types: CWE-130 | CWE-130 CWE-130 Improper handling of length parameter inconsistency

VersionSourceTypeScoreSeverityVector
3.12fc02b1f-71e7-4514-a878-169626f68903Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNACVSS7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wibu-systems-ag Codemeter-runtime affected 9.00 9.10 custom Not specified
CNA Wibu-systems-ag Codemeter-runtime affected 8.00 8.41a custom Not specified
CNA Wibu-systems-ag Codemeter-runtime unaffected 7.00 Not specified
CNA Wibu-systems-ag Codemeter-runtime unaffected 6.00 Not specified

References

ReferenceSourceLinkTags
cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-103... 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: Andrew Teylu of Vector Informatik GmbH (en)

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