Security readout for executives and security teams
Plain-English summary
CVE-2021-46597 affects Bentley MicroStation CONNECT 10.16.0.80. A malicious JT file or page could cause code to run as the user who opens it. The business risk is highest for engineering teams exchanging design files with outside parties.
Executive priority
Treat as a high-priority workstation risk for engineering environments, not an internet-wide emergency. Prioritize teams that exchange design files externally and confirm vendor remediation status.
Technical view
The flaw is in JT file parsing and is associated with CWE-416. The parser may operate on an object without validating that it exists, enabling arbitrary code execution in the current process after user interaction. CVSS v3.0 is 7.8 high.
Likely exposure
Exposure appears limited to Bentley MicroStation CONNECT 10.16.0.80 installations, especially workstations that open JT files or design content received from clients, suppliers, or web downloads.
Exploitation context
The bundle does not show CISA KEV listing or cited evidence of active exploitation. Exploitation requires user interaction: visiting a malicious page or opening a malicious file.
Researcher notes
Evidence in the bundle identifies ZDI-CAN-15391, ZDI-22-184, CVSS 7.8, CWE-416, and affected version 10.16.0.80. Patch details are not included in the provided text, so remediation should be verified with Bentley guidance.
Mitigation direction
- Identify Bentley MicroStation CONNECT 10.16.0.80 installations.
- Review Bentley BE-2021-0005 for vendor-supported remediation guidance.
- Restrict untrusted JT files from email, web downloads, and external exchanges.
- Use least-privilege accounts for MicroStation users where operationally feasible.
- Prioritize remediation on workstations handling third-party design files.
Validation and detection
- Check software inventory for MicroStation CONNECT 10.16.0.80.
- Confirm whether affected hosts process JT files from external sources.
- Verify remediation status against Bentley BE-2021-0005.
- Review endpoint detections for suspicious child processes from MicroStation.
- Document compensating controls for untrusted design-file handling.
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 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-2021-46597 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-2021-0005CVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-22-184/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.