CVE-2026-81575

Missing Sanity Checks for Buffer Lengths

State: Published
Severity: 7.5 High
Published: Aug 27, 2026
Updated: Aug 27, 2026
Reserved: Aug 27, 2026

Description

If 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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	wibu

Weaknesses

CWE-130 Improper handling of length parameter inconsistency

Affected Products

Product	Versions
codemeter-runtimewibu-systems-ag	9.00 to before 9.10Affected 8.00 to before 8.41aAffected 7.00Not affected 6.00Not affected

References

https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-103401.pdfvendor-advisory

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