CVE-2026-81574
Format String Vulnerability in Logger
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
In CodeMeter Runtime before versions 8.41a and 9.10, the logger does not sanitize input strings in certain cases, allowing an attacker to inject printf-style format specifiers. This can be used to reliably crash CodeMeter and disclose sensitive information such as process memory and stack canaries. The attack works locally, for example by using cmu --set-proxy to set the proxy value, and remotely when combined with CVE-2026-81573 by setting General.ProxyServer and then triggering this vulnerability.
| CWE | CWE-134 |
| Vendor | wibu-systems-ag |
| Product | codemeter-runtime |
| Published | Aug 27, 2026 |
| Last Updated | Aug 27, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Affected Versions
wibu-systems-ag / codemeter-runtime
9.00 < 9.10 8.00 < 8.41a 7.00
References
Credits
🔍 Andrew Teylu of Vector Informatik GmbH