CVE-2023-48693
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 · uneditedAzure RTOS ThreadX is an advanced real-time operating system (RTOS) designed specifically for deeply embedded applications. An attacker can cause arbitrary read and write due to vulnerability in parameter checking mechanism in Azure RTOS ThreadX, which may lead to privilege escalation. The affected components include RTOS ThreadX v6.2.1 and below. The fixes have been included in ThreadX release 6.3.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.
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 confidenceAzure RTOS ThreadX versions 6.2.1 and below contain a parameter checking mechanism vulnerability that allows an attacker to perform arbitrary memory read and write operations, potentially leading to privilege escalation in deeply embedded applications.
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< 6.3.0CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 Azure RTOS ThreadX is in useExamine the system firmware, SDK documentation, or build configuration to confirm ThreadX is the RTOS. Check for ThreadX-related files, headers (such as tx_api.h), or boot logs that reference ThreadX.Affected if ThreadX is confirmed as the RTOS in use
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Determine the ThreadX versionLocate the ThreadX version number in the firmware metadata, SDK release notes, build configuration, or the tx_api.h header file if source code is accessible. The version is typically declared as TX_VERSION_ID or similar.Affected if The version is 6.2.1 or lower, or any version < 6.3.0
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Verify the vulnerability context appliesConfirm the firmware or application uses ThreadX kernel services where parameter validation occurs. This is typically present in any ThreadX deployment using standard API calls.Affected if ThreadX is actively running and processing API calls
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Cross-reference firmware or SDK versionIf using a第三方 development kit or firmware bundle, check the accompanying documentation or version file for the embedded ThreadX library version included.Affected if The bundled ThreadX library version is < 6.3.0
The environment is affected if Azure RTOS ThreadX is in use and the installed or bundled version is below 6.3.0.
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.
dbcve · scoped6.3.0
Upgrade to ThreadX release 6.3.0 or later; no workarounds are available.
Azure RTOS ThreadX 6.3.0
- 1. Identify the current version of Azure RTOS ThreadX being used in your project by checking the version header file or release notes.
- 2. Obtain Azure RTOS ThreadX version 6.3.0 or later from the official Microsoft repository (github.com/Azure-RTOS/ThreadX).
- 3. Replace the existing ThreadX library files with the updated versions from the 6.3.0 release.
- 4. Rebuild and test the firmware/application to ensure the upgrade does not introduce regressions.
- 5. Verify the updated version by checking the ThreadX version identifier in the compiled binary.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-48693 — 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-2023-48693 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
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