---
title: "CVE-2026-115653: Eclipse ThreadX - Memory Corruption"
description: "Eclipse ThreadX 6.0.1 through 6.5.2.202603 contains a memory corruption vulnerability caused by unchecked stack pointer usage in the PendSV handler of Cortex-M module ports, letting user-mode memory-protected modules read and write adjacent memory regions, exploit requires user-mode memory-protected module."
url: https://panop.io/threat-heartbeat/CVE-2026-115653/
---

# CVE-2026-115653 Eclipse ThreadX - Memory Corruption

Eclipse ThreadX 6.0.1 through 6.5.2.202603 contains a memory corruption vulnerability caused by unchecked stack pointer usage in the PendSV handler of Cortex-M module ports, letting user-mode memory-protected modules read and write adjacent memory regions, exploit requires user-mode memory-protected module.

CVSS base score 7.0 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-115653)

## Details

Type

Memory Corruption

Impact

Information Disclosure, Data Tampering

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Published

2 November 2026

Updated

3 November 2026

Weakness

[CWE-787](https://cwe.mitre.org/data/definitions/787.html)

## Vendor fix

Update to a version later than 6.5.2.202603 or latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-115653](https://nvd.nist.gov/vuln/detail/CVE-2026-115653)
- [https://github.com/eclipse-threadx/threadx/security/advisories/GHSA-c38r-v552-gh5g](https://github.com/eclipse-threadx/threadx/security/advisories/GHSA-c38r-v552-gh5g)
- [https://gitlab.eclipse.org/security/cve-assignment/-/work\_items/503](https://gitlab.eclipse.org/security/cve-assignment/-/work_items/503)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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