Security readout for executives and security teams
Plain-English summary
CVE-2021-46160 affects Siemens Simcenter Femap V2020.2 and V2021.1. A malicious NEU file can trigger memory corruption when parsed, potentially letting attacker-supplied code run as the Femap process. The main business risk is compromised engineering workstations through unsafe file handling.
Executive priority
Treat this as a high-priority workstation risk for engineering teams using affected Femap versions, especially where project files arrive from vendors, customers, or partners.
Technical view
The issue is a CWE-787 out-of-bounds write past an allocated structure during NEU file parsing. The CVE states this may allow code execution in the current process. The provided bundle does not include CVSS scoring, fixed versions, or detailed mitigations beyond vendor and ZDI references.
Likely exposure
Exposure is most likely on workstations running affected Simcenter Femap versions that open, import, or otherwise process NEU files from external, shared, or untrusted sources.
Exploitation context
The provided sources describe exploitation through a specially crafted NEU file. CISA KEV status is false in the bundle, and no cited source here confirms active exploitation in the wild.
Researcher notes
Evidence is limited to the CVE description and references. The vulnerability is file-parser memory corruption with potential code execution, attributed to ZDI-CAN-15286. No exploit code, CVSS vector, patch level, or active exploitation evidence is included in the provided bundle.
Mitigation direction
- Check Siemens SSA-609880 for supported updates, fixed versions, or official workarounds.
- Avoid opening NEU files from untrusted or unexpected sources.
- Restrict NEU file exchange to authenticated business channels.
- Run Femap under least-privileged user accounts on managed workstations.
- Quarantine and scan externally supplied NEU files before engineering use.
Validation and detection
- Inventory endpoints for Simcenter Femap V2020.2 and V2021.1 installations.
- Review engineering workflows that receive NEU files from third parties.
- Confirm whether Siemens SSA-609880 identifies applicable updates for deployed versions.
- Check EDR logs for Femap process crashes or suspicious child activity.
- Verify users handling NEU files do not have unnecessary local administrator rights.
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-2021-46160 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-22-315/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.