Security readout for executives and security teams
Plain-English summary
Bentley View 10.15.0.75 can be compromised when a user opens a malicious DGN file or visits a malicious page. The flaw could let an attacker run code as that user. This is most relevant to engineering or CAD workstations handling external design files.
Executive priority
Treat this as a high-priority workstation risk for design and engineering groups. It is not described as remotely exploitable without user action, but successful exploitation could give an attacker code execution on a business-critical endpoint.
Technical view
The issue is a stack-based buffer overflow in DGN file parsing caused by missing length validation before copying user-controlled data. It is tracked as CWE-121, CVSS 7.8 high, and ZDI-CAN-15515. Exploitation requires user interaction and can lead to code execution in the current process context.
Likely exposure
Exposure is likely limited to endpoints running Bentley View 10.15.0.75, especially users who receive DGN files from outside parties or browse file-sharing/web content related to design files.
Exploitation context
The bundle does not show CISA KEV listing or active exploitation evidence. Public advisories describe a malicious file or page scenario requiring the target user to interact with attacker-controlled content.
Researcher notes
Evidence supports affected product/version, DGN parser location, CWE-121, CVSS 7.8, and user-interaction requirement. The provided bundle does not identify a fixed version, exploit availability, or active exploitation, so remediation should follow Bentley’s advisory rather than assumed patch details.
Mitigation direction
- Check Bentley advisory BE-2021-0009 for vendor remediation guidance.
- Prioritize updating or replacing Bentley View 10.15.0.75 where vendor guidance applies.
- Restrict opening DGN files from untrusted sources until remediation is complete.
- Use email and web controls to reduce delivery of suspicious design files.
- Consider isolating high-risk CAD workstations that process external files.
Validation and detection
- Inventory endpoints for Bentley View 10.15.0.75 installations.
- Identify users who handle external or partner-supplied DGN files.
- Confirm vendor guidance has been applied on affected workstations.
- Review endpoint telemetry for unexpected Bentley View child processes or crashes.
- Document compensating controls where upgrades are not yet complete.
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-121: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-46643 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
- High
- CVSS
- 7.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.8HighVector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.bentley.com/en/common-vulnerability-exposure/BE-2021-0009CVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-22-230/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.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.