CVE-2026-21046

FabricKeymaster Trustlet Race Condition Enabling Local Privilege Escalation

Published Jul 10, 2026 CVSS 4.0 · 8.4 High EPSS < 1% KEV · Not listed
Description
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

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title FabricKeymaster Trustlet Race Condition Enabling Local Privilege Escalation
Weaknesses CWE-617
Type Values Removed Values Added
Title FabricKeymaster Trustlet Race Condition Enabling Local Privilege Escalation
Weaknesses CWE-824
Type Values Removed Values Added
Title FabricKeymaster Trustlet Race Condition Enabling Local Privilege Escalation
Weaknesses CWE-824
Type Values Removed Values Added
Title FabricKeymaster Trustlet Time‑of‑Check Time‑of‑Use Race Enables Local Privilege Escalation on Samsung Mobile Devices
Weaknesses CWE-362
Type Values Removed Values Added
Title FabricKeymaster Trustlet Time‑of‑Check Time‑of‑Use Race Enables Local Privilege Escalation on Samsung Mobile Devices
Weaknesses CWE-362
Type Values Removed Values Added
Title FabricKeymaster Trustlet Local Privilege Escalation via Time‑of‑Check Time‑of‑Use Race Condition
Weaknesses CWE-617
CWE-732
Type Values Removed Values Added
Title FabricKeymaster Trustlet Local Privilege Escalation via Time‑of‑Check Time‑of‑Use Race Condition
Weaknesses CWE-617
CWE-732
Type Values Removed Values Added
Title Local Privilege Escalation via Time-of-Check Time-of-Use Race in FabricKeymaster Trustlet
Weaknesses CWE-250
CWE-409
Type Values Removed Values Added
Title Local Privilege Escalation via Time-of-Check Time-of-Use Race in FabricKeymaster Trustlet
Weaknesses CWE-250
CWE-409
Type Values Removed Values Added
Title Time‑of‑Check Time‑of‑Use Race in Samsung FabricKeymaster Trustlet Enables Code Execution
Weaknesses CWE-250
CWE-409
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Time‑of‑Check Time‑of‑Use Race in Samsung FabricKeymaster Trustlet Enables Code Execution
Weaknesses CWE-250
CWE-409
Type Values Removed Values Added
First Time appeared Samsung Mobile
Samsung Mobile samsung Mobile Devices
Vendors & Products Samsung Mobile
Samsung Mobile samsung Mobile Devices
Type Values Removed Values Added
Description 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.
References
Metrics cvssV4_0

{'score': 8.4, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
SamsungMobile
Published
Updated
Jul 11, 2026, 3:55 AM
Reserved
Dec 11, 2025, 1:33 AM
Status
Deferred
Published
Jul 10, 2026, 5:16 AM
Modified
Oct 25, 2026, 3:10 PM