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Yes. Memory-corruption flaws disclosed in 2024 for Eclipse ThreadX and NetX Duo could potentially lead to code execution, but the available advisories do not report confirmed exploitation in the wild or establish that every flaw is remotely exploitable. For the 2024 issues, upgrade affected components to ThreadX 6.4.0 or later; older issues have different fix versions, and a later syscall parameter-checking flaw requires 6.4.3.
What the vulnerabilities do
Eclipse ThreadX, formerly Azure RTOS, is an open-source real-time operating system and embedded development suite used in resource-constrained and IoT devices. A May 2024 disclosure described three flaws in ThreadX-related components: two in ThreadX functionality and one in NetX Duo allocation handling. Their common risk is memory corruption, but the vulnerable code and triggering conditions differ.
CVE-2024-2214: Xtensa port memory overwrite
The Xtensa port’s _Mtxinit() function does not adequately validate an array size. An out-of-bounds write can overwrite memory. NVD classifies the weakness as improper validation of an array index (CWE-129). The issue affects releases before 6.4.0 and is patched in 6.4.0, according to the Eclipse ThreadX project’s advisory.
CVE-2024-2212: FreeRTOS compatibility queue overflow
Missing parameter checks in the FreeRTOS compatibility functions xQueueCreate() and xQueueCreateSet() can allow integer wraparound and under-allocation, followed by a heap buffer overflow. The project lists versions before 6.4.0 as affected and 6.4.0 as patched.
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CVE-2024-2452: NetX Duo allocation overflow
If an attacker can control parameters passed to __portable_aligned_alloc(), integer wraparound can make the allocation smaller than expected. Later writes may then overflow the heap allocation. Researcher Marco Ivaldi described this as a potential consequence of controlling the allocator’s parameters. The recommended release for the 2024 vulnerability set is 6.4.0 or later; the project’s version table specifically identifies the 6.4.0 fix for CVE-2024-2214 and CVE-2024-2212.
CVE-2023-48693: ThreadX parameter-checking weakness
This earlier Azure RTOS ThreadX flaw can provide arbitrary read/write primitives and may permit privilege escalation. The project advisory identifies ThreadX 6.2.1 and earlier as affected and 6.3.0 as the release containing the fix.
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Are the ThreadX flaws remotely exploitable?
The available disclosures do not establish that all of these flaws can be triggered remotely. For the 2024 memory-corruption issues, the described precondition is control over inputs to vulnerable APIs or allocation handling; whether an attacker can supply those inputs depends on how a particular device exposes and validates data. The sources do not give a universal network attack path.
CVE-2023-48693 is scored as a local attack, not a remote one. Its CVSS 3.1 vector is AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L: the score assumes local access, low attack complexity, low privileges, no user interaction, changed scope, high confidentiality and integrity impact, and low availability impact. A device’s real exposure therefore depends on its firmware, interfaces, privilege boundaries, and whether untrusted input reaches the vulnerable code.
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Compare the affected flaws and fixes
| CVE and component | Affected versions | Trigger or precondition | Memory-safety issue | Severity figure | Fix |
|---|---|---|---|---|---|
| CVE-2024-2214, ThreadX Xtensa port | Before 6.4.0 (Eclipse ThreadX advisory) | Input reaches the vulnerable _Mtxinit() path; remote reachability is not stated (NVD and project advisory) |
Insufficient array-size validation can overwrite memory | CVSS 7.0, assigned by HN Security in 2024 | 6.4.0 or later (Eclipse ThreadX advisory) |
| CVE-2024-2212, FreeRTOS compatibility queue functions | Before 6.4.0 (Eclipse ThreadX advisory) | Attacker-controlled parameters reach xQueueCreate() or xQueueCreateSet(); remote reachability is not stated (disclosure) |
Integer wraparound, under-allocation, then heap buffer overflow | CVSS 7.3, assigned by HN Security in 2024 | 6.4.0 or later (Eclipse ThreadX advisory) |
| CVE-2024-2452, NetX Duo allocation handling | Before 6.4.0 (2024 vulnerability-set disclosure; a more specific range is not stated) | Attacker controls parameters to __portable_aligned_alloc(); remote reachability is not stated (disclosure) |
Integer wraparound can cause under-allocation and subsequent heap overflow | CVSS 7.0, assigned by HN Security in 2024 | Upgrade the 2024 vulnerability set to 6.4.0 or later (disclosure) |
| CVE-2023-48693, Azure RTOS ThreadX | 6.2.1 and earlier (Eclipse ThreadX advisory) | Local attack; CVSS vector requires low privileges (project advisory) | Parameter-checking weakness can provide arbitrary read/write primitives | CVSS 8.7, assigned by the Eclipse ThreadX project in 2023 | 6.3.0 or later (Eclipse ThreadX advisory) |
CVSS scores describe modeled severity and attack conditions; they do not prove that a flaw is exploitable over a network or that it has been exploited. The disclosures reviewed here do not report confirmed in-the-wild exploitation.
Which ThreadX version should you install?
Use the fix associated with each issue, rather than treating one old version boundary as sufficient for every ThreadX deployment:
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- For CVE-2024-2214, CVE-2024-2212, and the 2024 vulnerability set: use 6.4.0 or later.
- For CVE-2023-48693: use 6.3.0 or later; versions 6.2.1 and earlier are affected.
- For the later syscall parameter-checking issue: versions through 6.4.2 are affected, and 6.4.3 contains the fix.
The 6.4.3 issue is an additional version consideration, not a replacement for checking which components and flaws apply to a firmware image. A deployment on 6.4.0 may address the specified 2024 issues while still needing an update for that later flaw.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How maintainers should remediate embedded devices
- Inventory the firmware contents. Record the ThreadX, NetX Duo, and port versions actually included in each firmware build. Check vendor SDK bundles and board-support packages as well as components maintained directly by your team.
- Map components to CVEs. Determine whether the affected Xtensa port, FreeRTOS compatibility functions, NetX Duo allocation path, or earlier ThreadX parameter-checking code is present. A product’s marketing or SDK version alone may not identify every bundled component version.
- Update to the applicable fixed release. Use 6.4.0 or later for the 2024 set, 6.3.0 or later for CVE-2023-48693, and 6.4.3 or later where the later syscall parameter-checking flaw applies.
- Rebuild and redeploy firmware. Updating a source package or development environment does not by itself change devices already running an older image. Build with the fixed component and deploy the resulting firmware through the product’s established update process.
- Review input paths and exposure. Identify whether untrusted data can reach the affected APIs, allocator, or syscall handling, and check relevant privilege and memory-protection boundaries. This helps assess exposure while patches are prepared; it does not substitute for upgrading.
The cited advisories do not establish a universal workaround for every product configuration. Eclipse ThreadX publishes quarterly releases and does not maintain long-term-support branches, so teams should track component versions and plan updates accordingly.
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