Security readout for executives and security teams
Plain-English summary
This issue affects Siemens NX 1980 Series and Solid Edge SE2021 when they parse user-supplied IFC files. A malicious IFC file could trigger a memory error and run code as the user running the application. Business risk depends on whether staff exchange or open IFC files from external or untrusted sources.
Executive priority
Prioritize remediation where engineering users open IFC files from customers, suppliers, or shared project repositories. This is not evidenced as actively exploited in the provided sources, but the potential impact is code execution on user workstations.
Technical view
The IFC adapter in affected Siemens applications has a CWE-416 use-after-free condition during parsing of user-supplied IFC files. Siemens lists NX 1980 Series before V1984 and Solid Edge SE2021 before SE2021MP8 as affected. Successful exploitation could execute code in the current process context.
Likely exposure
Exposure is likely limited to workstations or environments using the affected Siemens engineering software versions and opening IFC files. Systems without NX 1980 Series or Solid Edge SE2021, or already at the listed fixed version thresholds, are not indicated as affected by the provided sources.
Exploitation context
The provided sources describe file-based exploitation through malicious user-supplied IFC files. The bundle does not show CISA KEV listing, active exploitation evidence, public exploit details, or network-reachable attack surface. Treat external IFC file handling as the main risk context.
Researcher notes
Evidence is sufficient for affected products, version thresholds, CWE class, trigger type, and impact. The bundle does not provide CVSS metrics, exploit maturity, detailed patch notes, or alternative mitigations beyond the fixed-version thresholds implied by Siemens affected-version data.
Mitigation direction
- Update NX 1980 Series to V1984 or later.
- Update Solid Edge SE2021 to SE2021MP8 or later.
- Review Siemens advisories for any additional vendor guidance.
- Restrict opening IFC files from untrusted or unexpected sources.
- Prioritize affected engineering workstations handling external project files.
Validation and detection
- Inventory Siemens NX 1980 Series and Solid Edge SE2021 installations.
- Confirm installed versions against V1984 and SE2021MP8 thresholds.
- Identify teams that receive IFC files from external parties.
- Check whether vulnerable versions remain in production workflows.
- Review endpoint telemetry for unusual behavior from affected applications.
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-416: 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-2021-37202 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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.