CVE-2020-26992
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 < V13.1.0), Teamcenter Visualization (All versions < V13.1.0). Affected applications lack proper validation of user-supplied data when parsing CGM files. This could lead to a stack based buffer overflow while trying to copy to a buffer during font string handling. An attacker could leverage this vulnerability to execute code in the context of the current process.
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 confidenceA stack-based buffer overflow vulnerability exists in JT2Go and Teamcenter Visualization when parsing CGM files. The applications fail to properly validate user-supplied data during font string handling, leading to a buffer overflow when copying data to a stack-allocated buffer. This can be exploited to execute arbitrary code 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< 13.1.0< 13.1.0CVSS 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 if JT2Go or Teamcenter Visualization is installedCheck the system for presence of either Siemens JT2Go or Teamcenter Visualization software. On Windows, review installed programs in Control Panel > Programs and Features, or check common installation directories (e.g., C:\Program Files\Siemens\).Affected if Either product is present on the system.
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Determine the installed version of the productFor JT2Go, right-click the executable (typically JT2Go.exe), select Properties, and view the File Version on the Details tab. For Teamcenter Visualization, locate the primary executable and check its file properties similarly. Alternatively, check the Windows registry under HKLM\SOFTWARE\Siemens\JT2Go or HKLM\SOFTWARE\Siemens\Teamcenter Visualization for a Version entry.Affected if The version displayed is below 13.1.0.
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Confirm CGM file parsing capability is presentVerify that the installed software includes CGM (Computer Graphics Metafile) parsing functionality. This is typically a core capability of these visualization products. Check product documentation or try opening a .cgm file to confirm the feature exists.Affected if CGM file handling is available and operational in the installed version.
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Assess exposure to untrusted CGM filesReview whether the software is used to open CGM files from external or untrusted sources. Check recent file access history, temporary directories, or document management systems for .cgm files that may have been processed.Affected if The software routinely processes CGM files from sources outside the organization's trusted content pipeline.
The environment is affected if either JT2Go or Teamcenter Visualization is installed with a version lower than 13.1.0 and the software has the ability to parse CGM files, exposing the system to potential exploitation through malicious CGM input.
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 data13.1.0
Upgrade JT2Go and Teamcenter Visualization to version V13.1.0 or later, which contains proper validation of user-supplied data during CGM file parsing.
- Consultation3.0 h
- Implementation2.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-26992 — 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-2020-26992 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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