CVE-2021-44442

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% 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-122

Description

A vulnerability has been identified in JT Utilities (All versions < V13.1.1.0), JTTK (All versions < V11.1.1.0). JTTK library in affected products contains an out of bounds write past the fixed-length heap-based buffer while parsing specially crafted JT files. This could allow an attacker to execute code in the context of the current process. (ZDI-CAN-14995)

Affected products

Siemens Jt Open Toolkit: before 11.1.1.0 — fixed in 11.1.1.0
Siemens JT Utilities: before 13.1.1.0 — fixed in 13.1.1.0

How to fix

Upgrade to a fixed version: Siemens Jt Open Toolkit 11.1.1.0; Siemens JT Utilities 13.1.1.0. Check the vendor advisory for mitigations.

References

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