What is CVE-2026-81575?

CVE-2026-81575 is a high-severity vulnerability in Wibu-Systems-Ag Codemeter-Runtime, classified under Improper Handling of Length Parameter Inconsistency. CVSS score: 7.5/10. Published 2026-08-27.

How severe is CVE-2026-81575?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Wibu-Systems-Ag Codemeter-Runtime

CVE-2026-81575

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.

EPSS: 0.004 (36.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Wibu-systems-ag Codemeter-runtime

Weakness classification (CWE)

CWE-130 — Improper Handling of Length Parameter Inconsistency

References

2fc02b1f-71e7-4514-a878-169626f68903 (vendor-advisory)

Frequently asked questions

What is CVE-2026-81575?: CVE-2026-81575 is a high-severity vulnerability in Wibu-Systems-Ag Codemeter-Runtime, classified under Improper Handling of Length Parameter Inconsistency. CVSS score: 7.5/10. Published 2026-08-27.
How severe is CVE-2026-81575?: High severity. CVSS v3 base score is 7.5 out of 10.