Security readout for executives and security teams
Plain-English summary
Siemens Solid Edge can mishandle specially crafted DFT drawing files. Opening a malicious file in affected SE2020 or SE2021 versions could let an attacker run code with the user’s privileges. This is most urgent where engineers exchange external CAD files or open supplier/customer drawings.
Executive priority
Prioritize remediation for engineering teams handling external drawings. The business risk is workstation compromise through normal file-opening workflows, with potential access to sensitive design data and internal project systems.
Technical view
The issue is a CWE-787 out-of-bounds write in DFT file parsing caused by insufficient validation of user-supplied data. Affected versions are Solid Edge SE2020 before SE2020MP13 and SE2021 before SE2021MP4. Successful exploitation could execute code in the current process.
Likely exposure
Exposure is concentrated on workstations running affected Solid Edge versions, especially users who open DFT files from email, portals, suppliers, customers, or shared project repositories.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. The described attack requires a malicious DFT file to be opened or processed by an affected Solid Edge application.
Researcher notes
Evidence is limited to the CVE description and linked Siemens/CISA advisories in the bundle. No CVSS vector is provided here. Treat this as file-parser memory corruption with code execution impact, but avoid assuming public exploit availability without additional cited evidence.
Mitigation direction
- Upgrade Solid Edge SE2020 to SE2020MP13 or later.
- Upgrade Solid Edge SE2021 to SE2021MP4 or later.
- Check Siemens advisories for any environment-specific guidance.
- Restrict opening DFT files from untrusted or unverified sources.
- Use endpoint controls to contain CAD workstation compromise impact.
Validation and detection
- Inventory Solid Edge installations and record SE2020 or SE2021 maintenance pack levels.
- Identify users or workflows that receive external DFT files.
- Confirm upgraded systems are outside the affected version ranges.
- Review email, file-sharing, and EDR telemetry for suspicious DFT handling.
- Document any unsupported Solid Edge deployments for remediation tracking.
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
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Open ATT&CK lookupCVE-2020-28385 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-715184.pdfCVE reference · x_refsource_MISC
- https://cert-portal.siemens.com/productcert/pdf/ssa-574442.pdfCVE reference · x_refsource_CONFIRM
- https://us-cert.cisa.gov/ics/advisories/icsa-21-103-06CVE reference · x_refsource_CONFIRM
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.