ICSA-21-222-01: Siemens JT2Go and Teamcenter Visualization products

CISA's summary

Summary: Siemens has released version V13.2.0.1 for JT2Go and Teamcenter Visualization to fix multiple vulnerabilities that could be triggered when the products read files in different file formats (CGM, DGN, DXF, and DWG). If a user is tricked to open a malicious file with the affected products, this could lead the application to crash or potentially arbitrary code execution. Siemens recommends to update to the latest versions and to limit opening of untrusted files from unknown sources in the affected products. Note: - This advisory also covers security vulnerabilities recently disclosed by Open Design Alliance [0] [0] https://www.opendesign.com/security-advisories

Products, as the advisory lists them

DeSpy has not checked any unit, hardware revision or firmware.

Vulnerabilities in this advisory

• CVE-2021-32936 — CVE-2021-32936 · CWE-787

  An out-of-bounds write issue exists in the DXF file-recovering procedure in the Open Design Alliance Drawings SDK (All versions prior to 2022.4) resulting from the lack of proper validation of user-supplied data. This can result in a write past the end of an allocated buffer and allow attackers to cause a denial-of-service condition or execute code in the context of the current process.

• CVE-2021-32938 — CVE-2021-32938 · CWE-125

  Open Design Alliance Drawings SDK (All versions prior to 2022.4) are vulnerable to an out-of-bounds read due to parsing of DWG files resulting from the lack of proper validation of user-supplied data. This can result in a read past the end of an allocated buffer and allows attackers to cause a denial-of service condition or read sensitive information from memory.

• CVE-2021-32940 — CVE-2021-32940 · CWE-125

  An out-of-bounds read issue exists in the DWG file-recovering procedure in the Open Design Alliance Drawings SDK (All versions prior to 2022.4) resulting from the lack of proper validation of user-supplied data. This can result in a read past the end of an allocated buffer and allow attackers to cause a denial-of-service condition or read sensitive information from memory locations.

• CVE-2021-32944 — CVE-2021-32944 · CWE-416

  A use-after-free issue exists in the DGN file-reading procedure in the Open Design Alliance Drawings SDK (All versions prior to 2022.4) resulting from the lack of proper validation of user-supplied data. This can result in a memory corruption or arbitrary code execution, allowing attackers to cause a denial-of-service condition or execute code in the context of the current process.

• CVE-2021-32948 — CVE-2021-32948 · CWE-787

  An out-of-bounds write issue exists in the DWG file-reading procedure in the Open Design Alliance Drawings SDK (All versions prior to 2022.4) resulting from the lack of proper validation of user-supplied data. This can result in a write past the end of an allocated buffer and allow attackers to cause a denial-of-service condition or execute code in the context of the current process.

• CVE-2021-32950 — CVE-2021-32950 · CWE-125

  An out-of-bounds read issue exists within the parsing of DXF files in the Open Design Alliance Drawings SDK (All versions prior to 2022.4) resulting from the lack of proper validation of user-supplied data. This can result in a read past the end of an allocated buffer and allows attackers to cause a denial-of-service condition or read sensitive information from memory locations.

• CVE-2021-33717 — CVE-2021-33717 · CWE-476

  When parsing specially crafted CGM Files, a NULL pointer deference condition could cause the application to crash. The application must be restarted to restore the service. An attacker could leverage this vulnerability to cause a Denial-of-Service condition in the application.

Acknowledgments, as the advisory lists them

• Siemens ProductCERT: reporting this vulnerability to CISA.
• Trend Micro Zero Day Initiative: coordinated disclosure
• Open Design Alliance: coordination efforts
• Kai Wang, Codesafe Team of Legendsec at Qi'anxin Group: coordinated disclosure of CVE-2021-33717

The advisory's legal notice

Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.

Sources

• The advisory at cisa.gov
• The CSAF document (JSON)

DeSpy's copy of this version is dated 2026-09-28.