CVE-2021-46625
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 · uneditedThis vulnerability allows remote attackers to execute arbitrary code 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 handling of JT files. The issue results from the lack of validating the existence of an object prior to performing further free operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-15455.
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 confidenceA use-after-free vulnerability in Bentley View's JT file parser allows remote code execution. The flaw exists because the software fails to validate object existence before performing free operations on it, enabling an attacker to manipulate memory through specially crafted JT files.
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< 10.16.02< 10.16.02CVSS 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
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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 checksWork through these to decide whether this CVE applies to you.
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Identify installed Bentley productCheck system for Bentley Microstation or Bentley View applications. Look in Program Files for Bentley folder or check installed programs list.Affected if Bentley View or Microstation is installed
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Check installed version numberOpen Bentley View or Microstation, go to Help > About, or check the program's version property in Add/Remove Programs. Compare the version to 10.16.02.Affected if Version is below 10.16.02 (e.g., 10.16.01, 10.15.x, earlier)
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Verify JT file handling is enabledCheck program settings or file associations for .jt file support. Look in Options or Preferences for JT importer/exporter settings.Affected if JT file parsing or JT file associations are enabled in the application
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Review recent file activityCheck recent documents or temp folders for .jt files that may have been opened. Examine application logs if available.Affected if Untrusted JT files have been opened in the application
You are affected if Bentley View or Microstation version is below 10.16.02 and the JT file parsing feature is in use.
Generated from the published advisory. Verify against your own configuration.
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 · scoped10.16.02
Avoid opening untrusted JT files and apply vendor patches for Bentley View when available. Implement network segmentation and email filtering to reduce exposure to malicious file delivery.
10.16.02 or later
- Identify the currently installed version of Bentley MicroStation or View
- Navigate to the official Bentley website and download version 10.16.02 or later
- Install the update following Bentley's standard installation procedures
- Verify the installation was successful by checking the version number in the application
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-46625 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2021-46625 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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