Security readout for executives and security teams
Plain-English summary
This flaw affects Siemens Solid Edge SE2021 before MP7. A malicious OBJ 3D model file could cause the application to mishandle memory and potentially run attacker-controlled code as the user running Solid Edge.
Executive priority
Treat this as a priority for engineering and design workstations using affected Solid Edge versions, particularly where third-party model files are common. It is not described as internet-exposed, but compromise could begin through routine file exchange.
Technical view
PSKERNEL.dll does not properly validate user-supplied OBJ files, creating a CWE-416 use-after-free condition. The disclosed impact is code execution in the current process. No CVSS score was provided in the supplied bundle.
Likely exposure
Exposure is limited to environments running Solid Edge SE2021 versions earlier than SE2021MP7, especially workstations that open OBJ files from customers, suppliers, email, or shared design repositories.
Exploitation context
The supplied sources do not show CISA KEV listing or active exploitation. Practical exploitation appears file-driven: a user would need to open or import a malicious OBJ file in an affected Solid Edge version.
Researcher notes
Evidence supports a user-supplied OBJ parsing issue in PSKERNEL.dll causing use-after-free and possible code execution. The bundle lacks CVSS detail, exploit maturity, and deeper technical indicators, so validation should focus on version exposure and file-handling paths.
Mitigation direction
- Upgrade Solid Edge SE2021 to MP7 or later where applicable.
- Check Siemens ProductCERT guidance before relying on compensating controls.
- Restrict opening OBJ files from untrusted external sources.
- Use endpoint controls to quarantine suspicious CAD file attachments.
- Train CAD users to verify unexpected OBJ files before opening.
Validation and detection
- Inventory Solid Edge SE2021 installations and confirm maintenance pack level.
- Identify workflows that accept OBJ files from external parties.
- Review email, file-share, and ticketing paths for CAD file ingestion.
- Confirm vulnerable versions are removed or upgraded.
- Check security logs for unusual Solid Edge process behavior.
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-2021-37179 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-818688.pdfCVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-21-1114/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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.