Security readout for executives and security teams
Plain-English summary
CVE-2021-46162 affects Siemens Simcenter Femap before V2022.1.1. A malicious NEU file can trigger memory corruption that may let code run as the user running Femap. The business risk is highest where engineers open externally supplied model or neutral files.
Executive priority
Treat this as a high-priority engineering workstation exposure if Simcenter Femap is used with external files. Prioritize version validation and upgrade planning, but avoid emergency claims absent evidence of active exploitation.
Technical view
Simcenter Femap has a CWE-787 out-of-bounds write while parsing specially crafted NEU files. The reported impact is code execution in the current process context. The provided bundle does not include CVSS scoring, exploit details, or evidence of broad exploitation.
Likely exposure
Exposure is limited to environments running Simcenter Femap versions earlier than V2022.1.1, especially workstations or engineering systems that import NEU files from customers, suppliers, partners, email, or shared repositories.
Exploitation context
The sources describe exploitation through a specially crafted NEU file. The CVE is not marked in KEV, and the provided sources do not claim active exploitation in the wild.
Researcher notes
The key evidence is an out-of-bounds write in NEU parsing with possible code execution in the Femap process. Severity metadata is incomplete in the bundle, so risk rating relies on impact, affected range, and likely user-assisted file handling.
Mitigation direction
- Upgrade Simcenter Femap to V2022.1.1 or later where applicable.
- Review Siemens SSA-949188 for current vendor remediation guidance.
- Restrict opening NEU files from untrusted or unverified sources until remediated.
- Apply normal endpoint controls around engineering workstations handling external files.
Validation and detection
- Inventory Simcenter Femap installations and record exact versions.
- Confirm affected systems are not running versions earlier than V2022.1.1.
- Identify workflows where users import NEU files from external parties.
- Review recent security guidance from Siemens for this advisory.
- Validate that engineering file intake controls cover NEU files.
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-2021-46162 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-949188.pdfCVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-22-511/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.