CVE-2026-81576 — HIGH (7.7)

Vulnerability Description

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.

CVSS Score

7.7

HIGH

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

Related Weaknesses (CWE)

CWE-639

References

https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-1

FAQ

What is CVE-2026-81576?

CVE-2026-81576 is a vulnerability with a CVSS score of 7.7 (HIGH). 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 ...

How severe is CVE-2026-81576?

CVE-2026-81576 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-81576?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.