ICSA-21-315-08: Siemens NX OBJ Translator
CISA advisory · released 2021-11-09
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 2, 2025-05-06 (final)
CISA's summary
Summary: Siemens NX is affected by two vulnerabilities that could be triggered when the application reads OBJ files. If a user is tricked to open a malicious file with the affected application, this could lead to an access violation, and potentially also to arbitrary code execution on the target host system. Siemens has released updates for the NX and recommends to update to the latest version. Siemens recommends to avoid opening of untrusted files from unknown sources.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | NX 1953 Series | <V1973.3700 |
| Siemens | NX 1980 Series | <V1988 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2021-41535 — CVE-2021-41535 · CWE-416
The affected application contains a use-after-free vulnerability while parsing OBJ files. An attacker could leverage this vulnerability to execute code in the context of the current process (ZDI-CAN-13771).
- CVE-2021-41538 — CVE-2021-41538 · CWE-824
The affected application is vulnerable to information disclosure by unexpected access to an uninitialized pointer while parsing user-supplied OBJ files. An attacker could leverage this vulnerability to leak information from unexpected memory locations (ZDI-CAN-13770).
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reporting these vulnerabilities to CISA.
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
DeSpy's copy of this version is dated 2026-09-28.
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