CVE-2026-21046 PUBLISHED

Assigner: SamsungMobile
Reserved: 11.12.2025 Published: 10.07.2026 Updated: 10.07.2026

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.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	High
User Interaction	None

CVSS 4.0

Product Status

Vendor	Samsung Mobile
Product	Samsung Mobile Devices
Versions	Default: affected unaffected from SMR Jul-2026 Release in Android 14, 15, 16 to * (excl.)

References

https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=07

Problem Types

CWE-367 Time-of-check time-of-use (TOCTOU) race condition