A vulnerability has been identified in JT2Go (All versions < V13.2), Teamcenter Visualization (All versions < V13.2).

published 2021-07-13 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-20991

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.9%; EPSS 1.9% chance of exploitation in 30 days, percentile 79%
public exploits: 0; none known

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)

Patch / fix

fixed in 2

siemens jt2go 13.2.0
siemens teamcenter_visualization 13.2.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-21-194-15 updated 2021-07-13 cvss 7.8

ICSA-21-194-15_Siemens JT2Go and Teamcenter Visualization

Siemens JT2Go < 13.2 Siemens Teamcenter Visualization < 13.2
affected: mitigation “JT2Go: Update to v13.2” cert-portal.siemens.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.89% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

Siemens JT2Go
Siemens Teamcenter Visualization

Classification

Weakness

CWE-416 Use After Free
CWE-20 Improper Input Validation

References

cert-portal.siemens.com /productcert/pdf/ssa-483182.pdf
vendor-advisory
zerodayinitiative.com /advisories/ZDI-21-868/
third-party-advisory, vdb-entry

Sources

CVE List CVE-2021-34330
NVD CVE-2021-34330

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary