CVE-2021-44447: Siemens Jt Open Toolkit

High severity, CVSS 7.8. EPSS: 0.9% chance of exploitation in the next 30 days.

A vulnerability has been identified in JT Utilities (All versions < V13.0.3.0), JTTK (All versions < V11.0.3.0). JTTK library in affected products contains a use-after-free vulnerability that could be triggered while parsing specially crafted JT files. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-14911)

Affected products

• Siemens Jt Open Toolkit: before 11.0.3.0 (fixed in 11.0.3.0)
• Siemens Jt Utilities: before 13.0.3.0 (fixed in 13.0.3.0)

Published 2021-12-14. Last modified 2026-06-17.