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. The attacker needs user interaction, but successful exploitation could run code with that user’s privileges, putting engineering workstations and design data at risk.
Executive priority
Treat as a high-priority workstation risk for teams using Bentley MicroStation. It is not wormable based on the supplied evidence, but compromise could affect sensitive project files and engineering environments through normal file-handling workflows.
Technical view
The flaw is a CWE-125 out-of-bounds read in JT file parsing. Crafted JT data can trigger a read past an allocated buffer and may allow arbitrary code execution in the current process. The CVSS 3.0 score is 7.8 with local attack vector and required user interaction.
Likely exposure
Exposure is most likely on engineering, CAD, or design workstations running Bentley MicroStation CONNECT 10.16.0.80, especially where users handle JT files from customers, suppliers, project portals, or email attachments.
Exploitation context
The sources describe remote attacker intent but require the victim to open a malicious file or visit a malicious page. The CVE is not listed as KEV in the supplied bundle, and no source here confirms active exploitation.
Researcher notes
Evidence is specific to MicroStation CONNECT 10.16.0.80 and JT parsing. The bundle cites Bentley and ZDI, including ZDI-CAN-15385, but does not include exploit-in-the-wild evidence or detailed fixed-version data. Validate remediation directly against Bentley’s advisory.
Mitigation direction
- Inventory MicroStation CONNECT installations and identify version 10.16.0.80.
- Review Bentley advisory BE-2021-0005 for vendor remediation guidance.
- Limit opening JT files from untrusted external sources.
- Route externally supplied JT files through established security review workflows.
- Educate affected users about unsolicited CAD files and project links.
Validation and detection
- Confirm whether MicroStation CONNECT 10.16.0.80 is installed on managed endpoints.
- Check where JT files enter engineering workflows.
- Review endpoint telemetry for suspicious MicroStation child processes or crashes.
- Verify users handling external JT files have current vendor-approved protections.
- Track remediation status against Bentley advisory BE-2021-0005.
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-125: 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-2021-46591 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-22-178/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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.