CVE-2021-44447

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-12-14 · updated 2026-06-17
Weakness: CWE-416

Description

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

How to fix

Upgrade to a fixed version: Siemens Jt Open Toolkit 11.0.3.0; Siemens JT Utilities 13.0.3.0. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2021-44447 or the next vulnerability affects your stack