CVE-2021-21455
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 in its DIB file parser. When a user opens a manipulated DIB file from an untrusted source, the application crashes due to insufficient validation of malformed file data, resulting in denial of service until the application is restarted.
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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Confirm installed version of SAP 3D Visual Enterprise ViewerOpen the application, then navigate to Help > About SAP 3D Visual Enterprise Viewer, or locate the application in Add/Remove Programs (Windows) or Applications folder (macOS) to view the installed version numberAffected if The installed version is exactly 9 (version 9.0, 9.0.0, etc.)
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Identify if the DIB file parser component is presentCheck the application installation directory for DIB-related DLLs or parser modules (typically in the program files folder under SAP folder), or attempt to open any DIB file to confirm the parser is functionalAffected if DIB file handling capability exists and the application can process DIB files
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Verify file association for DIB file typeRight-click any .dib file in Windows Explorer and select Properties > Opens with, or check file type associations in the system registry under HKEY_CLASSES_ROOT for .dib extensionAffected if SAP 3D Visual Enterprise Viewer is associated as the default handler for DIB files
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Audit user-accessible DIB files in shared or download locationsSearch network shares, download folders, and email attachment directories for .dib files using File Explorer search or command-line tools (dir /s *.dib or find . -name "*.dib")Affected if DIB files from untrusted sources exist in locations accessible to users who have this application installed
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Review security policies on file handling from external sourcesCheck group policy settings or endpoint protection configurations for controls on opening files from untrusted or unknown sources, particularly attachments and downloaded contentAffected if No organizational policy restricts users from opening DIB files received from external or untrusted sources
A user is affected if SAP 3D Visual Enterprise Viewer version 9 is installed and users can open DIB files from untrusted or manipulated sources, as the vulnerability is triggered upon processing malformed DIB file data.
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 dataOrganizations should apply the vendor patch when released and enforce policies prohibiting users from opening DIB files from untrusted or unknown sources. User awareness training on the risks of opening files from untrusted sources is recommended.
- Consultation2.0 h
- Implementation1.0 h
- Testing1.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2021-21455 — 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-2021-21455 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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