---
id: CVE-2026-21121
title: >-
  Improper handling of insufficient permission in CmcCore prior to SMR Oct-2026
  Release 1 allows local attackers to use the privileged APIs.
summary: >-
  Improper handling of insufficient permission in CmcCore prior to SMR Oct-2026
  Release 1 allows local attackers to use the privileged APIs.
severity: none
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T05:17:00.640'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-21121'
references:
  - url: 'https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=10'
    label: mobile.security@samsung.com
tags:
  - nvd
ingestedAt: '2026-10-12T14:50:34.085Z'
---

## Overview

Improper handling of insufficient permission in CmcCore prior to SMR Oct-2026 Release 1 allows local attackers to use the privileged APIs.

## Remediation

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