TOCTOU Race in Samsung FabricKeymaster Trustlet Enables Local Privileged Code Exec
CVE-2026-21046 Published on July 10, 2026
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.
Vulnerability Analysis
CVE-2026-21046 is exploitable with local system access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Products Associated with CVE-2026-21046
Want to know whenever a new CVE is published for Samsung Mobile Devices? stack.watch will email you.
Affected Versions
Samsung Mobile Devices:- Version SMR Jul-2026 Release in Android 14, 15, 16 and below * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.