CVE-2026-81576
Improper Authentication of Session Handles
CVSS Score
7.7
EPSS Score
0.0%
EPSS Percentile
0th
If configured as a server, CodeMeter Runtime before versions 8.41a and 9.10 issues handles per connection and relies on a cryptographically weak SID as sole authenticator. An attacker can brute-force the SID, recover another session's handle number, and read license information belonging to another handle.
| CWE | CWE-639 |
| Vendor | wibu-systems-ag |
| Product | codemeter-runtime |
| Published | Aug 27, 2026 |
| Last Updated | Aug 27, 2026 |
Stay Ahead of the Next One
Get instant alerts for wibu-systems-ag codemeter-runtime
Be the first to know when new high vulnerabilities affecting wibu-systems-ag codemeter-runtime are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
wibu-systems-ag / codemeter-runtime
9.00 < 9.10 8.00 < 8.41a 7.00 6.00
References
Credits
🔍 Andrew Teylu of Vector Informatik GmbH