CVE-2021-33715
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 JT Utilities (All versions < V13.0.2.0). When parsing specially crafted JT files, a race condition could cause an object to be released before being operated on, leading to NULL pointer deference condition and causing the application to crash. An attacker could leverage this vulnerability to cause a Denial-of-Service condition in the application.
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 confidenceA race condition in JT Utilities (versions before V13.0.2.0) causes an object to be prematurely released while still being referenced during JT file parsing, leading to a NULL pointer dereference and application crash.
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< 13.0.2.0CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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 Siemens JT Utilities installationLocate the JT Utilities installation directory or executable on the system. Common locations include the Siemens installation folder or Program Files. The primary executable is typically named jtutils.exe or similar JT Utilities binaries.Affected if Siemens JT Utilities is not installed on the system
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Determine installed versionRun the JT Utilities executable with a version flag such as --version, -v, or consult the binary properties (right-click > Properties > Details) to retrieve the exact version number.Affected if Unable to determine the version or the version cannot be retrieved
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Compare version against affected rangeCompare the installed version number to the affected range: versions before V13.0.2.0. The vulnerable versions are any release less than 13.0.2.0, including all V12.x and earlier versions.Affected if Installed version is less than 13.0.2.0 (for example, 13.0.1.0, 12.5.3, 12.0.0, etc.)
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Identify JT file parsing usageDetermine whether the JT Utilities are used to parse or process JT files. This may occur through direct command-line usage, automated scripts, or integration with downstream applications that invoke JT Utilities for file processing.Affected if JT Utilities with a vulnerable version is used to parse JT files, as this is the attack vector for triggering the race condition
The environment is affected if Siemens JT Utilities version is below 13.0.2.0 and the software is used to parse JT files, as the race condition during file parsing leads to the NULL pointer dereference crash.
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 data13.0.2.0
Upgrade JT Utilities to version V13.0.2.0 or later to obtain the vendor fix for this race condition vulnerability.
- Consultation2.0 h
- Implementation2.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-33715 — 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-2021-33715 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
- No weaponised exploit code, or anything meant to cause harm
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