Security readout for executives and security teams
Plain-English summary
CVE-2021-46615 is an information disclosure flaw in Bentley MicroStation CONNECT 10.16.0.80. A user must open a malicious file or visit a malicious page. On its own, the CVSS score is low, but source material notes it could support code execution when chained with other vulnerabilities.
Executive priority
Treat as a low-severity desktop application issue with targeted phishing relevance. Remediate through normal workstation patch cycles, faster for teams handling untrusted engineering content.
Technical view
The flaw is a CWE-125 out-of-bounds read in BMP image parsing caused by insufficient validation of user-supplied data. It can read past an allocated buffer, exposing limited process information. ZDI tracked it as ZDI-CAN-15409 / ZDI-22-202.
Likely exposure
Exposure appears limited to environments running Bentley MicroStation CONNECT 10.16.0.80, especially where users open externally supplied design assets, image files, or links. The provided sources do not prove other versions are affected.
Exploitation context
The bundle does not show KEV listing or active exploitation. Exploitation requires user interaction. The practical concern is targeted delivery of malicious content to engineering or design users, potentially as part of a chained attack.
Researcher notes
Evidence supports BMP parser out-of-bounds read and limited confidentiality impact. The arbitrary-code-execution concern is described only as possible when combined with other vulnerabilities; do not treat this CVE alone as proven RCE.
Mitigation direction
- Review Bentley BE-2021-0002 for vendor-specified updates or mitigations.
- Prioritize remediation for MicroStation users handling third-party files.
- Limit opening untrusted BMP images or design packages until vendor guidance is applied.
- Use email and web controls to reduce delivery of unsolicited engineering files.
Validation and detection
- Inventory Bentley MicroStation CONNECT installations and identify version 10.16.0.80.
- Confirm whether Bentley BE-2021-0002 guidance has been applied.
- Review workflows where users receive external BMP or design content.
- Check vulnerability management tools for CVE-2021-46615 coverage.
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-2021-46615 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-2021-0002CVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-22-202/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.