---
id: CVE-2026-102212
title: Pre-Auth Heap Buffer Overflow in the Multipart Request
summary: >-
  Heap-based buffer overflow in Opengear IM72XX, CM71XX, and ACM70XX firmware
  versions 4.8.0 through 5.5.2 on console server appliances allows an
  unauthenticated remote attacker to crash the index.cgi process via a crafted
  multipart/form-d…
severity: high
cvss: 8.4
cvssVector: >-
  CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/S:P/AU:Y/RE:L/U:Red
cvssSource: cna
cwe:
  - CWE-122
vendor: Opengear
product: IM7200
affected:
  - IM7200 >= 4.8 <= 5.5.2
  - CM7100 >= 4.8 <= 5.5.2
  - ACM7000 >= 4.8 <= 5.5.2
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-06T13:48:15.446541Z'
published: '2026-10-31'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T13:48:25.489Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-102212'
references:
  - url: >-
      https://portal.opengear.com/customerservice/s/article/Release-Notification-Firmware-Version-5-5-3-is-Now-Generally-Available
  - url: >-
      https://portal.opengear.com/customerservice/s/article/CVE-2026-102212-Opengear-Console-Server-Buffer-Overflow-to-RCE
tags:
  - cve.org
epss: 0.0032
epssPercentile: 0.25098
ingestedAt: '2026-11-05T16:24:31.553Z'
---

## Overview

Heap-based buffer overflow in Opengear IM72XX, CM71XX, and ACM70XX firmware versions 4.8.0 through 5.5.2 on console server appliances allows an unauthenticated remote attacker to crash the index.cgi process via a crafted multipart/form-data POST request containing an overlong Content-Disposition name field.

## Affected

- `IM7200 >= 4.8 <= 5.5.2`
- `CM7100 >= 4.8 <= 5.5.2`
- `ACM7000 >= 4.8 <= 5.5.2`

## Remediation

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