CVE-2021-44447

Name: CVE-2021-44447
Creator: NVD / NIST
Published: 2021-12-14T12:15:11.827+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2021-44447 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

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)

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.85%

53.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Siemens	Jt Open Toolkit	< 11.0.3.0
Siemens	Jt Utilities	< 13.0.3.0

References

https://cert-portal.siemens.com/productcert/pdf/ssa-352143.pdfVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-352143.pdfVendor Advisory

Timeline

Published: Dec 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-44447?

How severe is CVE-2021-44447?

CVE-2021-44447 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2021-44447?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-44447?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST