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.
History

Thu, 27 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 27 Aug 2026 09:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Format String Vulnerability in Logger
First Time appeared Wibu-systems-ag
Wibu-systems-ag codemeter-runtime
Weaknesses CWE-134
CPEs cpe:2.3:a:wibu-systems-ag:codemeter-runtime:*:*:*:*:*:*:*:*
cpe:2.3:a:wibu-systems-ag:codemeter-runtime:6.00:*:*:*:*:*:*:*
cpe:2.3:a:wibu-systems-ag:codemeter-runtime:7.00:*:*:*:*:*:*:*
Vendors & Products Wibu-systems-ag
Wibu-systems-ag codemeter-runtime
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: wibu

Published: 2026-08-27T07:11:56.916Z

Updated: 2026-08-27T13:32:50.315Z

Reserved: 2026-08-27T07:01:24.780Z

Link: CVE-2026-81574

cve-icon Vulnrichment

Updated: 2026-08-27T13:32:29.796Z

cve-icon NVD

Status : Received

Published: 2026-08-27T10:16:40.077

Modified: 2026-08-27T10:16:40.077

Link: CVE-2026-81574

cve-icon Redhat

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