CVE-2021-21457
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 IFF 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 improper input validation when parsing IFF files, allowing attackers to crash the application by providing a specially crafted IFF file. The vulnerability is triggered when a user opens a manipulated IFF file from an untrusted source, causing 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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Identify if SAP 3D Visual Enterprise Viewer is installedCheck the installed programs on the system for 'SAP 3D Visual Enterprise Viewer' or look in Program Files for the application directory. On Windows, check Add/Remove Programs or run: reg query 'HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall' /s | findstr -i 'SAP 3D Visual Enterprise Viewer'Affected if The application is present on the system
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Verify the installed version is exactly 9Locate the application executable (typically in Program Files\SAP\SAP 3D Visual Enterprise Viewer\) and check its version properties. Right-click the .exe file, select Properties, and check the Version tab. Alternatively, run: dir "C:\Program Files\SAP\SAP 3D Visual Enterprise Viewer\*.exe" and check the version info.Affected if The installed version is 9.0.0.x (exactly version 9)
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Confirm IFF file handling capability existsCheck if the application has IFF file association or import filters. Look for IFF-related DLLs or filters in the application directory, or attempt to open any .iff file to see if the application attempts to process it.Affected if The application can open or parse IFF files
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Check for presence of untrusted IFF filesSearch the filesystem for .iff files in user-accessible locations such as Downloads, Desktop, or shared network folders. Run: dir /s /b C:\*.iff (or use File Explorer search) to locate any IFF files.Affected if IFF files from untrusted or unknown sources exist on the system and could be opened by the viewer
A user is affected if SAP 3D Visual Enterprise Viewer version 9 is installed, the application can process IFF files, and a user could open a specially crafted IFF file from an untrusted source.
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 dataDo not open IFF files from untrusted sources. Apply vendor patches for SAP 3D Visual Enterprise Viewer when available to address the input validation flaw.
- Consultation2.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-21457 — 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-2021-21457 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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