Security readout for executives and security teams
Plain-English summary
This issue affects Bentley MicroStation CONNECT 10.16.0.80. A victim must open a malicious 3DS file or visit a malicious page. The direct impact is limited information disclosure, but sources note it may help an attacker when chained with other vulnerabilities.
Executive priority
Treat as a low standalone urgency item, but include it in the CAD workstation patch cycle. Raise priority for teams regularly receiving external design files from customers, suppliers, or partners.
Technical view
The flaw is a CWE-125 out-of-bounds read in 3DS file parsing. Improper validation of user-supplied data can read past an allocated buffer. CVSS 3.0 is 3.3 with local attack vector, required user interaction, low confidentiality impact, and no integrity or availability impact.
Likely exposure
Exposure is most likely on engineering or design workstations running Bentley MicroStation CONNECT 10.16.0.80, especially where users open third-party 3DS files or follow external project links.
Exploitation context
The provided bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires user interaction. ZDI notes attackers could use it with other vulnerabilities to execute code in the current process.
Researcher notes
Evidence is specific to MicroStation CONNECT 10.16.0.80. Do not broaden affected versions without vendor confirmation. The meaningful risk is chaining: the disclosed out-of-bounds read may assist exploitation of another memory-safety issue.
Mitigation direction
- Identify and prioritize Bentley MicroStation CONNECT 10.16.0.80 installations.
- Check Bentley advisory BE-2021-0004 for approved fixes or mitigations.
- Restrict opening untrusted 3DS files from external sources.
- Use normal endpoint controls for suspicious files and links.
- Educate CAD users on unsolicited model files and project links.
Validation and detection
- Inventory endpoints for MicroStation CONNECT 10.16.0.80.
- Review whether users exchange or import 3DS files.
- Confirm Bentley guidance has been reviewed and applied.
- Check endpoint controls cover downloaded CAD/model files.
- Record residual exposure where upgrades are not immediately possible.
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-2021-46607 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-2021-0004CVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-22-194/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.