Security readout for executives and security teams
Plain-English summary
Bentley MicroStation CONNECT 10.16.0.80 can be compromised if a user opens a malicious JT file or visits a malicious page. Successful exploitation could let an attacker run code as that user, affecting confidentiality, integrity, and availability.
Executive priority
Prioritize remediation for engineering, design, and operations teams that use MicroStation with external model files. The business risk is targeted workstation compromise through routine file handling, not broad internet-wide exposure.
Technical view
The flaw is a CWE-121 stack-based buffer overflow in JT file parsing. The parser fails to validate user-supplied data length before copying to a stack buffer, enabling arbitrary code execution in the current process context after user interaction.
Likely exposure
Exposure is likely limited to organizations running Bentley MicroStation CONNECT 10.16.0.80, especially teams that receive or exchange JT CAD/model files from external parties.
Exploitation context
The CVSS vector requires local interaction and user action. The source bundle does not show CISA KEV listing or cited evidence of active exploitation in the wild.
Researcher notes
ZDI tracks this as ZDI-22-152 and ZDI-CAN-15024. Available evidence names MicroStation CONNECT 10.16.0.80 and JT parsing; it does not support expanding impact to other Bentley products or versions.
Mitigation direction
- Identify systems running Bentley MicroStation CONNECT 10.16.0.80.
- Review Bentley advisory BE-2021-0005 and apply vendor-recommended updates or mitigations.
- Warn users not to open unsolicited JT files or CAD files from untrusted sources.
- Use least-privilege desktop access for users handling external CAD/model files.
Validation and detection
- Confirm whether MicroStation CONNECT 10.16.0.80 is installed in endpoint inventory.
- Review Bentley BE-2021-0005 for fixed versions or vendor remediation status.
- Check security telemetry for MicroStation opening JT files from email, downloads, or web locations.
- Verify users handling JT files have updated software or documented compensating controls.
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-2021-46565 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-22-152/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.