---
id: CVE-2026-21046
title: >-
  Time-of-check time-of-use race condition in fabricKeymaster trustlet prior to
  SMR Jul-2026 Release 1 allows local privileged attackers to execute arbitrary
  code.
summary: >-
  Time-of-check time-of-use race condition in fabricKeymaster trustlet prior to
  SMR Jul-2026 Release 1 allows local privileged attackers to execute arbitrary
  code.
severity: none
published: '2026-07-10'
updated: '2026-07-11'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-21046'
references:
  - url: 'https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=07'
    label: mobile.security@samsung.com
tags:
  - nvd
epss: 0.00129
epssPercentile: 0.02065
ingestedAt: '2026-07-11T20:15:25.923Z'
---

## Overview

Time-of-check time-of-use race condition in fabricKeymaster trustlet prior to SMR Jul-2026 Release 1 allows local privileged attackers to execute arbitrary code.

## Remediation

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