CVE-2021-34330

Name: CVE-2021-34330
Creator: NVD / NIST
Published: 2021-07-13T11:15:13.253+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.79%

Last modified Jun 17, 2026

CVE-2021-34330 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A vulnerability has been identified in JT2Go (All versions < V13.2), Teamcenter Visualization (All versions < V13.2). The Jt981.dll library in affected applications lacks proper validation of user-supplied data prior to performing further free operations on an object when parsing JT files. EPSS estimates a 1.79% chance of exploitation in the next 30 days.

Description

A vulnerability has been identified in JT2Go (All versions < V13.2), Teamcenter Visualization (All versions < V13.2). The Jt981.dll library in affected applications lacks proper validation of user-supplied data prior to performing further free operations on an object when parsing JT files. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-13430)

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

1.79%

75.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Siemens	Jt2go	< 13.2.0
Siemens	Teamcenter Visualization	< 13.2.0

References

https://cert-portal.siemens.com/productcert/pdf/ssa-483182.pdfVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-868/Third Party Advisory, VDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-483182.pdfVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-868/Third Party Advisory, VDB Entry

Timeline

Published: Jul 13, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-34330?

How severe is CVE-2021-34330?

CVE-2021-34330 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.79% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34330?

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-2021-34330?

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

Scan your code now

Source: NVD / NIST