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Vulnerability record · CVE-2021-44433 · published 14 December 2021

CVE-2021-44433: Siemens jt open toolkit use after free vulnerability

Siemens · Jt Open Toolkit

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 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-14900)

7.8 CVSS 3.1 High EPSS 0.86% · top 43.3% CWE-416 · Use after free
7.8CVSS 3.1 base score, v2 6.8
0.86%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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 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-14900)

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cert-portal.siemens.com/productcert/pdf/ssa-802578.pdf Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-802578.pdf Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-2023-30796Siemens jt open toolkit out-of-bounds read vulnerabilityA vulnerability has been identified in JT Open (All versions < V11.4), JT Utilities (All versions < V13.4). The affected applications contain an out …EPSS 0.22%7.8CVE-2023-30795Siemens jt open out-of-bounds read vulnerabilityA vulnerability has been identified in JT Open (All versions < V11.4), JT Utilities (All versions < V13.4), Parasolid V34.0 (All versions < V34.0.253…EPSS 0.22%7.8CVE-2023-29053Siemens jt open toolkit out-of-bounds read vulnerabilityA vulnerability has been identified in JT Open (All versions < V11.3.2.0), JT Utilities (All versions < V13.3.0.0). The affected applications contain…EPSS 0.22%7.8CVE-2022-47936Siemens jt open toolkit stack-based buffer overflow vulnerabilityA vulnerability has been identified in JT Open (All versions < V11.2.3.0), JT Utilities (All versions < V13.2.3.0), Parasolid V34.0 (All versions < V…EPSS 0.23%7.8CVE-2022-47977Siemens jt open toolkit memory buffer overflow vulnerabilityA vulnerability has been identified in JT Open (All versions < V11.2.3.0), JT Utilities (All versions < V13.2.3.0). The affected application contains…EPSS 0.22%7.8CVE-2022-47935Siemens jt open toolkit memory buffer overflow vulnerabilityA vulnerability has been identified in JT Open (All versions < V11.1.1.0), JT Utilities (All versions < V13.1.1.0), Solid Edge (All versions < V2023)…EPSS 0.28%7.8CVE-2022-41851Siemens jt open toolkit vulnerabilityA vulnerability has been identified in JTTK (All versions < V11.1.1.0), Simcenter Femap V2022.1 (All versions < V2022.1.3), Simcenter Femap V2022.2 (…EPSS 0.24%7.8CVE-2021-44432Siemens jt open toolkit stack-based buffer overflow vulnerabilityA 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 is…EPSS 0.87%

Source: NIST National Vulnerability Database (record CVE-2021-44433), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.