Security readout for executives and security teams
Plain-English summary
A flaw in Bentley MicroStation CONNECT 10.16.0.80 can expose limited sensitive information when a user opens a malicious DWG file or visits a malicious page. It requires user interaction and is rated low by CVSS, but ZDI notes it could support code execution when combined with other vulnerabilities.
Executive priority
Treat this as a targeted desktop application risk, not an internet-scale emergency. Prioritize teams that exchange engineering files externally and confirm whether affected MicroStation versions remain in use.
Technical view
The issue is CWE-125 out-of-bounds read in DWG parsing caused by insufficient validation of user-supplied data. The CVSS 3.0 vector indicates low confidentiality impact, no integrity or availability impact, and required user interaction.
Likely exposure
Exposure is limited to organizations running Bentley MicroStation CONNECT 10.16.0.80 and allowing users to open DWG files from external or untrusted sources.
Exploitation context
The provided sources do not show known active exploitation or KEV listing. Exploitation requires convincing a user to open malicious content. Standalone impact is information disclosure, with possible chaining risk noted by ZDI.
Researcher notes
Evidence names MicroStation CONNECT 10.16.0.80 and DWG parsing only. The source bundle does not provide patch version details, proof of active exploitation, or broader affected-product data, so avoid expanding scope beyond cited sources.
Mitigation direction
- Review Bentley advisory BE-2021-0010 for vendor-supported remediation.
- Update affected MicroStation installations if Bentley provides a fixed version.
- Restrict opening DWG files from untrusted senders or locations.
- Use email and web filtering for suspicious engineering-file delivery.
- Educate design users to verify unexpected DWG files before opening.
Validation and detection
- Inventory Bentley MicroStation CONNECT versions across endpoints.
- Identify any installations running version 10.16.0.80.
- Review workflows that accept external DWG files.
- Confirm users handling DWG files receive targeted security guidance.
- Track Bentley and ZDI advisories for remediation details.
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-2021-46594 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-2021-0010CVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-22-181/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.