CVE-2021-21456
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 · uneditedSAP 3D Visual Enterprise Viewer, version - 9, allows a user to open manipulated DIB file received from untrusted sources which results in crashing of the application and becoming temporarily unavailable until the user restarts the application, this is caused due to Improper Input Validation.
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 confidenceSAP 3D Visual Enterprise Viewer version 9 contains an improper input validation vulnerability when parsing DIB image files. When a user opens a specially crafted (manipulated) DIB file from an untrusted source, the application crashes and becomes unavailable until the user restarts the application, resulting in a denial-of-service condition.
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= 9CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/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 SAP 3D Visual Enterprise Viewer is installedOn Windows, open Control Panel > Programs and Features, or run 'Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* | Select-Object DisplayName, DisplayVersion' in PowerShell to list installed programs and their versionsAffected if SAP 3D Visual Enterprise Viewer appears in the installed programs list with version 9
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Verify the exact version numberRight-click the application executable (typically in C:\Program Files\SAP\SAP 3D Visual Enterprise Viewer\) and select Properties > Details to confirm the File Version is exactly 9.0.xAffected if The installed version is exactly 9.0 (any 9.x subversion)
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Check for recent DIB file usage or crashesOpen Windows Event Viewer > Windows Logs > Application and look for crash events or application error events (Event ID 1000) related to 'SAP 3D Visual Enterprise Viewer' occurring around the time of opening DIB filesAffected if Application crash events related to SAP 3D Visual Enterprise Viewer are present in the logs after DIB file processing
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Inspect DIB file associationsRun 'assoc .dib' in Command Prompt to check if .dib files are associated with SAP 3D Visual Enterprise Viewer, or check registry under HKCR\.dib to see the associated applicationAffected if DIB files are configured to open with SAP 3D Visual Enterprise Viewer
A user is affected if SAP 3D Visual Enterprise Viewer version 9 is installed and DIB files are associated with or can be opened by this application, as the vulnerability triggers upon parsing a malicious DIB file.
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.
From vendor dataApply the vendor patch from SAP when available. Until then, enforce user awareness training to avoid opening DIB files from untrusted sources, and consider implementing application whitelisting or endpoint protection to block execution of untrusted file attachments.
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-21456 — 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-2021-21456 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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- Version or environment caveats, and links to real fixes
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