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MicrostationApplication · Bentley

CVE-2021-46624

MEDIUM · 5.5 CVSS v3.1 Published 2022-02-18
Fix available
A fix is available. Upgrade to 10.16.02 or later.
See remediation →
58/100
Remediation priority · Elevated
No privileges

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Bentley View 10.15.0.75. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of DWG files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-15454.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

This is an out-of-bounds read vulnerability in Bentley View's DWG file parser. The lack of proper validation of user-supplied data during DWG file parsing allows reading past the end of an allocated buffer, leading to sensitive information disclosure. Exploitation requires the user to open a malicious DWG file, and this vulnerability can be chained with other flaws to achieve arbitrary code execution.

MitigationAvoid opening untrusted or unverified DWG files. Update to the patched version of Bentley View once released by the vendor.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
MicrostationApplication
Affected:< 10.16.02
ViewApplication
Affected:< 10.16.02

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed Bentley product
    Open the application and check About or look for Bentley Microstation or Bentley View in Programs and Features
    Affected if Either Bentley Microstation or Bentley View is installed
  2. Check product version number
    In the application, go to Help > About or right-click the executable and view Properties > Details to find the version
    Affected if Version is lower than 10.16.02 (for example, 10.16.00, 10.15.x, or earlier)
  3. Confirm DWG file handling is possible
    Verify the installation includes DWG file support by attempting to open or import a DWG file, or check the installed components
    Affected if DWG import/open functionality is available and the version is below 10.16.02

You are affected if Bentley Microstation or View is installed with a version lower than 10.16.02 and you handle DWG files.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 10.16.02 or later
Fixed in 10.16.02
Interim mitigation

Avoid opening untrusted or unverified DWG files. Update to the patched version of Bentley View once released by the vendor.

Recommended fix High confidence

10.16.02

  1. 1. Identify the current version of Bentley View or MicroStation installed by launching the application and navigating to Help > About, or checking Add/Remove Programs.
  2. 2. If the installed version is earlier than 10.16.02, navigate to the official Bentley support website at www.bentley.com to download version 10.16.02 or later.
  3. 3. Close all Bentley applications and ensure any open DWG files are saved and closed.
  4. 4. Run the downloaded installer with appropriate administrative privileges.
  5. 5. Follow the on-screen installation prompts to complete the upgrade.
  6. 6. After installation, verify the new version by checking Help > About to confirm version 10.16.02 or later is installed.
  7. 7. Test that DWG files open correctly to ensure the upgrade did not introduce functionality issues.
Caveat Standard upgrade; verify custom configurations or macros still function after upgrading, as with any software update

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Microstation Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-46624 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data