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MicrostationApplication · Bentley

CVE-2021-46618

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 MicroStation CONNECT 10.16.0.80. 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 PNG images. 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-15412.

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

Out-of-bounds read vulnerability in Bentley MicroStation CONNECT's PNG image parser. The lack of proper validation of user-supplied data during PNG parsing allows reading past the end of an allocated buffer, potentially disclosing sensitive information. Requires user interaction (opening malicious PNG file).

MitigationApply vendor patch when available. Until then, avoid opening untrusted PNG files from unknown or untrusted sources.

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
Microstation ConnectApplication
Affected:<= 10.16.0.80
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
    Check if Bentley MicroStation, MicroStation Connect, or Bentley View is installed by looking for the application in Program Files or Program Files (x86), or checking the Windows registry under HKLM\SOFTWARE\Bentley or HKLM\SOFTWARE\WOW6432Node\Bentley
    Affected if Any of these three products are present on the system
  2. Determine installed version
    Locate the product executable (typically in C:\Program Files\Bentley\MicroStation or C:\Program Files\Bentley\MicroStation CONNECT) and check its version properties, or use the About dialog within the application
    Affected if The version is below 10.16.02 for MicroStation or Bentley View, or 10.16.0.80 or lower for MicroStation Connect
  3. Confirm PNG functionality is present
    Verify the application can open PNG files by attempting to open a benign PNG image, or check that the image import feature includes PNG support in the application's supported formats
    Affected if PNG file opening capability exists in the installed product version

The system is affected if any of the three Bentley products is installed with a version below the patched releases (10.16.02 for MicroStation/Bentley View, 10.16.0.80 for MicroStation Connect) and the application can process PNG 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

Apply vendor patch when available. Until then, avoid opening untrusted PNG files from unknown or untrusted sources.

Recommended fix High confidence

MicroStation and View: upgrade to 10.16.02 or later; MicroStation Connect: upgrade to 10.16.0.81 or later

  1. Obtain the latest version of Bentley MicroStation, MicroStation Connect, or View from the official Bentley website (www.bentley.com)
  2. Download the installer for your specific product
  3. Follow Bentley's standard installation/upgrade procedure
  4. After upgrade, verify the installed version is 10.16.02 or later for MicroStation/View, or 10.16.0.81 or later for MicroStation Connect

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

Fix this in Microstation Scoped from the published advisory
  • Consultation3.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
17.0 hours of engineering $3,000
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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-2021-46618 in production — separate from our analysis above.

No notes yet

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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