ICSA-21-257-04: Siemens Simcenter Femap

CISA's summary

Summary: Siemens Simcenter Femap is affected by a vulnerability that could be triggered when the application reads modfem files. If a user is tricked to open a malicious file with the affected application, an attacker could leverage this vulnerability to leak information in the context of the current process. Siemens recommends to update to the latest version line of Simcenter Femap (2021.2), which is not affected by this type of vulnerabilities. Siemens recommends to avoid opening of untrusted files from unknown sources.

Products, as the advisory lists them

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

Vulnerabilities in this advisory

• CVE-2021-37176 — CVE-2021-37176 · CWE-125

  The femap.exe application lacks proper validation of user-supplied data when parsing modfem files. This could result in an out of bounds read past the end of an allocated buffer. An attacker could leverage this vulnerability to leak information in the context of the current process. (ZDI-CAN-14260)

Acknowledgments, as the advisory lists them

• Siemens ProductCERT: reporting this vulnerability to CISA.
• Trend Micro Zero Day Initiative: coordinated disclosure

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.