Security readout for executives and security teams
Plain-English summary
CVE-2021-46583 is a high-severity file parsing flaw in Bentley MicroStation CONNECT 10.16.0.80. A victim must open a malicious file or visit a malicious page. Successful exploitation could let an attacker run code with the user's application privileges.
Executive priority
Treat this as a targeted workstation risk for engineering and design teams. It is not remotely exploitable without user action, but compromise could affect confidentiality, integrity, and availability on systems that process untrusted files.
Technical view
The flaw is a CWE-787 out-of-bounds write in J2K image parsing. Crafted J2K data can write past an allocated buffer and may lead to arbitrary code execution in the current process. The CVSS 3.0 score is 7.8 with user interaction required.
Likely exposure
Exposure is most likely where Bentley MicroStation CONNECT 10.16.0.80 is installed and users handle externally supplied CAD, image, or project files. Systems with unrestricted email, web downloads, or partner file exchange carry higher practical risk.
Exploitation context
The source bundle does not show active exploitation, and this CVE is not marked KEV. Exploitation requires user interaction through a malicious page or malicious file. No public exploit status is provided in the supplied sources.
Researcher notes
ZDI identifies this as ZDI-CAN-15377/ZDI-22-170. The vulnerability is in J2K image parsing and maps to CWE-787. The supplied bundle does not include a fixed version, exploit proof, or detailed vendor mitigation text.
Mitigation direction
- Check Bentley advisory BE-2021-0006 for vendor-approved updates or mitigations.
- Prioritize upgrading or removing Bentley MicroStation CONNECT 10.16.0.80 where present.
- Limit opening externally supplied files until vendor guidance is applied.
- Use email, web, and file-transfer controls to reduce malicious file delivery.
- Run MicroStation with least-privilege user accounts where operationally feasible.
Validation and detection
- Inventory endpoints for Bentley MicroStation CONNECT 10.16.0.80.
- Confirm installed MicroStation versions against Bentley advisory BE-2021-0006.
- Review exposure from external CAD, image, and partner file workflows.
- Check endpoint telemetry for MicroStation opening files from email or downloads.
- Verify users do not run MicroStation with unnecessary administrative rights.
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-787: 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-2021-46583 mapping review
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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-2021-0006CVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-22-170/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 Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.