Security readout for executives and security teams
Plain-English summary
Simcenter Femap can mishandle a specially crafted NEU file and corrupt memory. If a user opens such a file, an attacker may run code with that user's privileges. This is most relevant to engineering teams that exchange model files with external parties.
Executive priority
Treat this as a high-priority workstation risk where affected Femap versions handle external files. Urgency is driven by potential code execution, but the bundle does not show active exploitation or a CVSS score.
Technical view
CVE-2021-46151 is a CWE-787 out-of-bounds write in Siemens Simcenter Femap V2020.2 and V2021.1 while parsing crafted NEU files. The CVE states this can lead to code execution in the current process. No CVSS score is included in the supplied bundle.
Likely exposure
Exposure is likely limited to endpoints running Siemens Simcenter Femap V2020.2 or V2021.1 that open NEU files, especially files received from customers, suppliers, or shared project repositories.
Exploitation context
The supplied sources describe malicious-file parsing, not remote network exploitation. CISA KEV status is false in the bundle, and no cited source here confirms active exploitation.
Researcher notes
This is a file-parser memory corruption issue tied to NEU parsing and identified as ZDI-CAN-14754 and ZDI-CAN-15082. Analysis should focus on affected Femap versions, user interaction paths, and vendor guidance rather than assumed exploit availability.
Mitigation direction
- Check Siemens ProductCERT SSA-609880 for vendor-approved fixed versions or mitigations.
- Prioritize removal or upgrade of affected Femap V2020.2 and V2021.1 installations.
- Block or quarantine unsolicited NEU files from email and external transfer channels.
- Require users to open external engineering files only from trusted, validated sources.
- Run Femap with least-privilege user accounts where operationally possible.
Validation and detection
- Inventory endpoints for Simcenter Femap V2020.2 and V2021.1 installations.
- Confirm whether engineering teams exchange NEU files with external parties.
- Review security telemetry for suspicious child processes launched from Femap.
- Check mail and file-transfer logs for unexpected NEU attachments or downloads.
- Validate remediation status against Siemens ProductCERT guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-46151 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://cert-portal.siemens.com/productcert/pdf/ssa-609880.pdfCVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-22-292/CVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-22-291/CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.