Security readout for executives and security teams
Plain-English summary
CVE-2021-46610 affects Bentley MicroStation CONNECT 10.16.0.80. A malicious JT file or page can cause the application to read beyond a buffer and disclose sensitive information. User interaction is required. Public sources provided do not show active exploitation, and CISA KEV status is false.
Executive priority
Treat as low priority unless MicroStation users routinely process externally supplied JT files. Address during normal patch cycles, with faster action for high-trust engineering workstations handling third-party design files.
Technical view
The flaw is a CWE-125 out-of-bounds read in JT file parsing caused by insufficient validation of user-supplied data. CVSS 3.0 is 3.3, with low confidentiality impact and no direct integrity or availability impact. Sources state it could help achieve code execution only when chained with other vulnerabilities.
Likely exposure
Exposure is most likely in engineering or design environments running MicroStation CONNECT 10.16.0.80 and opening JT files from customers, suppliers, or external project partners.
Exploitation context
Attackers need the target to visit a malicious page or open a malicious file. The provided sources do not establish active exploitation or a standalone code-execution path.
Researcher notes
Evidence supports an out-of-bounds read in JT parsing with user interaction required. ZDI identifier ZDI-CAN-15404 is referenced. Do not treat this as known exploited or standalone RCE based on the supplied sources.
Mitigation direction
- Check Bentley advisory BE-2021-0005 for vendor-recommended updates or workarounds.
- Avoid opening JT files from untrusted sources until affected systems are addressed.
- Apply least-privilege user accounts for MicroStation users where practical.
- Use mail and web controls to flag unsolicited CAD/JT files or links.
- Track Bentley, CVE, and ZDI references for any updated remediation details.
Validation and detection
- Inventory MicroStation CONNECT installations and confirm whether version 10.16.0.80 is present.
- Review workflows that accept JT files from external or unauthenticated sources.
- Confirm remediation status against Bentley advisory BE-2021-0005.
- Check security telemetry for suspicious MicroStation crashes involving JT files.
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-2021-46610 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
- Low
- CVSS
- 3.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
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:L/I:N/A:N1.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
3.3LowVector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
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-22-197/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.