CVE-2021-22663: Hornerautomation Cscape

High severity, CVSS 7.8. EPSS: 1.3% chance of exploitation in the next 30 days.

Cscape (All versions prior to 9.90 SP3.5) lacks proper validation of user-supplied data when parsing project files. This could lead to an out-of-bounds read. An attacker could leverage this vulnerability to execute code in the context of the current process.

Affected products

• Hornerautomation Cscape: before 9.90 (fixed in 9.90)
• Siemens Cscape: version 9.90 only

Published 2021-02-09. Last modified 2026-06-17.