CVE-2021-34309
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 Tiff_loader.dll library in affected applications lacks proper validation of user-supplied data when parsing TIFF 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-13350)
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 confidenceHeap buffer overflow in Tiff_loader.dll due to insufficient validation of user-supplied data when parsing malicious TIFF files, leading to out-of-bounds write and potential 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 productsCheck for Jt2go or Teamcenter Visualization installation directories, such as C:\Program Files\Siemens\Jt2Go or C:\Program Files\Teamcenter, or use system inventory tools to list installed software.Affected if Either Jt2go or Teamcenter Visualization is installed on the system
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Check Jt2go versionRight-click the Jt2go executable (Jt2Go.exe), select Properties, and view the Version tab. Alternatively, check the version in Add/Remove Programs.Affected if The installed version is earlier than 13.2.0
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Check Teamcenter Visualization versionRight-click the Teamcenter Visualization executable, select Properties, and view the Version tab. Alternatively, check the version in Add/Remove Programs.Affected if The installed version is earlier than 13.2.0
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Locate and verify Tiff_loader.dll versionSearch for Tiff_loader.dll in the application installation directory and check the file version via Properties, or use commands like 'dir /s Tiff_loader.dll' within the program directory.Affected if Tiff_loader.dll version is earlier than 13.2.0 or the file metadata shows a version prior to the patch
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Determine if TIFF processing is enabledReview whether the application has been used to open, import, or process TIFF files, or check if TIFF file handlers are associated with the installed software.Affected if The software can process TIFF files and is an affected version
A user is affected if they have Jt2go or Teamcenter Visualization installed with a version lower than 13.2.0 and the application processes TIFF 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.
From vendor data13.2.0
Upgrade JT2Go and Teamcenter Visualization to version V13.2 or later to obtain the patched Tiff_loader.dll library.
- Consultation4.0 h
- Implementation4.0 h
- Testing8.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-34309 — 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-2021-34309 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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