CVE-2021-34898
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 parsing of JT files. Crafted data in a JT file can trigger a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14865.
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 · moderate confidenceBuffer overflow vulnerability in Bentley View's JT file parser allows remote code execution via specially crafted JT files. The flaw triggers a write operation past the end of an allocated buffer during file parsing, enabling attackers to execute arbitrary code in the context of the current user process.
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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Check if Bentley View is installedLocate Bentley View installation via program files directory or system inventory of installed softwareAffected if Bentley View is present on the system
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Check if Microstation is installedLocate Microstation installation via program files directory or system inventory of installed softwareAffected if Microstation is present on the system
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Determine installed version of Bentley ViewAccess the application or its installer properties to retrieve the version number (typically found in Help > About or file properties of the main executable)Affected if The installed version is below 10.16.02
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Determine installed version of MicrostationAccess the application or its installer properties to retrieve the version number (typically found in Help > About or file properties of the main executable)Affected if The installed version is below 10.16.02
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Verify JT file handling capabilityConfirm the application can open or preview .jt files, as the vulnerability triggers during JT file parsingAffected if The application can process JT files and runs an affected version
You are affected if either Bentley View or Microstation is installed with a version lower than 10.16.02 and the application has the ability to open or parse JT files.
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
Apply vendor-supplied patch when available; until then, enforce strict controls on JT file sources and disable automatic file opening in Bentley View.
10.16.02
- 1. Identify the affected Bentley product (Bentley View or MicroStation) currently installed
- 2. Navigate to the official Bentley support website at www.bentley.com
- 3. Locate the download section for your specific product
- 4. Download version 10.16.02 or later of the affected product
- 5. Close all instances of the application
- 6. Run the installer and follow the prompts to upgrade
- 7. Verify the installation by checking the application's About/Version information
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,152.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-34898 — 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-2021-34898 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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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.
- 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