CVE-2026-21046
Time-of-check time-of-use race condition in fabricKeymaster trustlet prior to SMR Jul-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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2026-21046- CVSS 4.0
- 8.4 High
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 - Updated
- 2026-11-02
EUVDEUVD-2026-42817
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.
- Record
EUVD-2026-42817- CVSS 4.0
- 8.4 High
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-g963-gfxf-m962
Time-of-check time-of-use race condition in fabricKeymaster trustlet prior to SMR Jul-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.
- Record
GHSA-g963-gfxf-m962- CVSS 4.0
- 8.4 High
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-21046- CVSS 4.0
- 8.4 High
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-21046 is a high vulnerability (CVSS 8.4) in Samsung Mobile Devices, published July 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.13%, the 2nd percentile. No source names a fixed version.