---
id: CVE-2026-82945
title: Memory Corruption via FMMU Configuration Table Overflow
summary: >-
  SOEM version 2.0.0 and earlier contains a vulnerability during device
  configuration where a malicious device can cause memory corruption. The
  software writes configuration data to a fixed-size array without checking if
  the array index ex…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-787
  - CWE-129
  - CWE-120
vendor: RT-Labs AB
product: SOEM
affected:
  - SOEM < 2.0.1
published: '2026-10-26'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T08:51:32.194Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-82945'
references:
  - url: 'https://rt-labs.com/wp-content/uploads/2026/10/RRTL-260921-01.pdf'
tags:
  - cve.org
ingestedAt: '2026-10-26T09:22:35.521Z'
---

## Overview

SOEM version 2.0.0 and earlier contains a vulnerability during device configuration where a malicious device can cause memory corruption. The software writes configuration data to a fixed-size array without checking if the array index exceeds its maximum size of EC_MAXFMMU entries. A device presenting more than EC_MAXFMMU configuration blocks can force writes beyond the array boundary, corrupting adjacent memory structures and potentially disrupting subsequent operations.

## Affected

- `SOEM < 2.0.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.