CVE-2021-34297
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 · uneditedA vulnerability has been identified in JT2Go (All versions < V13.2), Teamcenter Visualization (All versions < V13.2). The BMP_Loader.dll library in affected applications lacks proper validation of user-supplied data when parsing BMP files. This could result in an out of bounds write past the end of an allocated structure. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-13059)
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 confidenceThe BMP_Loader.dll library in JT2Go and Teamcenter Visualization lacks proper validation of user-supplied data when parsing BMP files, leading to an out-of-bounds write beyond allocated buffer boundaries. This memory corruption can be exploited for arbitrary code execution in the context of the current 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< 13.2.0< 13.2.0CVSS 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 Siemens productCheck if JT2Go or Teamcenter Visualization is installed by looking for the application in the program files directory (typically C:\Program Files\Siemens\Jt2Go or C:\Program Files\Siemens\Teamcenter Visualization)Affected if Either JT2Go or Teamcenter Visualization is present on the system
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Check product versionLocate the main executable (Jt2Go.exe or Teamcenter Visualization executable) and check its file version property via right-click > Properties > Details, or use a tool like PowerShell (Get-Item). Compare against the affected range: versions prior to 13.2.0Affected if The installed version is lower than 13.2.0 (for example, 13.1.x, 13.0.x, or earlier)
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Locate BMP_Loader.dll componentSearch for BMP_Loader.dll in the application installation directory (commonly in the bin or program folder under the Siemens product folder)Affected if BMP_Loader.dll exists in the product directory, confirming the vulnerable component is present
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Assess BMP file processing usageDetermine if the product is used to open or preview BMP image files, as the vulnerability is triggered during BMP file parsingAffected if Users open BMP files using the affected product, making them susceptible to the out-of-bounds write when processing specially crafted BMP files
A user is affected if they have JT2Go or Teamcenter Visualization installed with a version lower than 13.2.0 and use the product to open BMP files, which triggers the vulnerable BMP_Loader.dll parsing code.
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 data13.2.0
Update JT2Go and Teamcenter Visualization to version 13.2 or later to obtain the patched BMP_Loader.dll library that properly validates BMP file data.
- Consultation2.0 h
- Implementation1.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-34297 — 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-2021-34297 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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