---
id: "CVE-2026-118052"
kind: "vulnerability"
aliases: ["CVE-2026-118052"]
title: "Eclipse ThreadX: Module Manager mutex left locked after overflow error"
severity: "medium"
cvss: 6.8
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["embedded", "module-manager", "rtos", "runtime", "threadx"]
not_affected_if: ["module-manager-unused"]
published_at: "2026-11-02T15:17:16+00:00"
first_seen_at: "2026-11-02T15:24:01+00:00"
updated_at: "2026-11-02T15:26:16+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-118052", "first_seen_at": "2026-11-02T15:24:01+00:00"}]
---

# Eclipse ThreadX: Module Manager mutex left locked after overflow error

In Eclipse ThreadX 6.0.1 through 6.5.2.202603, the Module Manager loaders return an overflow error without releasing the Module Manager mutex when a module preamble declares an oversized data or stack size. Loading such an image blocks every later module load, start, stop and unload from other threads until the system is reset.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check whether the product in use is Eclipse ThreadX and its version (`6.0.1` to `6.5.2.202603` is affected per the sources)
- Check whether the Module Manager feature is used to load modules

## Timeline

- 2026-11-02T15:24:01+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-118052

## Documents

- [advisory] Vendor advisory: github.com https://github.com/eclipse-threadx/threadx/security/advisories/GHSA-67ww-q8x2-g487

## From the sources

In Eclipse ThreadX versions 6.0.1 through 6.5.2.202603, the Module Manager loaders return an overflow error without releasing the Module Manager mutex when a module preamble declares a data or stack size that overflows the allocation arithmetic. Loading such an image blocks every later module load, start, stop and unload from other threads until the system is reset.

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