CVE-2021-20094: Siemens Pss Cape

High severity, CVSS 7.5. EPSS: 4.7% chance of exploitation in the next 30 days.

A denial of service vulnerability exists in Wibu-Systems CodeMeter versions < 7.21a. An unauthenticated remote attacker can exploit this issue to crash the CodeMeter Runtime Server.

Affected products

• Siemens Pss Cape: affected versions not specified
• Siemens Sicam 230 Firmware: affected versions not specified
• Wibu Codemeter: before 7.21a (fixed in 7.21a)

Published 2021-06-16. Last modified 2026-06-17.