Security readout for executives and security teams
Plain-English summary
This flaw affects Siemens NX 1980 Series and Solid Edge SE2021 when they parse IFC files. A malicious or malformed IFC file could crash the application or expose memory contents. Business risk is mainly disruption to engineering workflows and potential leakage from systems handling untrusted design files.
Executive priority
Treat this as a targeted engineering workstation and design-file workflow risk. Prioritize teams that exchange IFC files externally or handle sensitive design data. It is not KEV-listed in the provided sources, but affected deployments should be updated during normal vulnerability remediation cycles.
Technical view
CVE-2021-37203 is a CWE-125 out-of-bounds read in Siemens plmxmlAdapterIFC.dll during parsing of user-supplied IFC files. A read past an allocated buffer may cause denial of service or disclose sensitive memory. Affected versions are NX 1980 Series before V1984 and Solid Edge SE2021 before SE2021MP8.
Likely exposure
Exposure is likely limited to organizations running affected Siemens NX 1980 Series or Solid Edge SE2021 versions and opening IFC files, especially files received from customers, suppliers, or other external parties.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. The described trigger is parsing a user-supplied IFC file, so available evidence points to file-handling exposure rather than direct internet-facing exploitation.
Researcher notes
Evidence is limited to the CVE record and Siemens advisory references in the bundle. No CVSS score, exploit details, or workaround text is included. Validate against Siemens SSA-208530 and SSA-728618 before making operational conclusions beyond affected versions and described impact.
Mitigation direction
- Upgrade NX 1980 Series to V1984 or a later non-affected release.
- Upgrade Solid Edge SE2021 to SE2021MP8 or a later non-affected release.
- Review the linked Siemens advisories for product-specific remediation guidance.
- Limit processing of untrusted IFC files until affected installations are updated.
- Handle external IFC files in controlled workflows where feasible.
Validation and detection
- Inventory Siemens NX and Solid Edge installations and versions.
- Identify systems using NX 1980 Series below V1984.
- Identify systems using Solid Edge SE2021 below SE2021MP8.
- Confirm whether IFC files are accepted from external parties.
- Verify remediation against Siemens advisory guidance after updates.
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-125: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-37203 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-208530.pdfCVE reference · x_refsource_MISC
- https://cert-portal.siemens.com/productcert/pdf/ssa-728618.pdfCVE 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 Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.