CVE-2026-21046

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…

High · published July 10, 2026

CVSS v4.0
8.4
EPSS
0%
Percentile
2.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.4 · HIGH
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
EPSS
0.00129 · 2.3th percentile
Published
2026-07-10T04:58Z
EPSS history
Timeline
  • 10 JUL 04:58Z
    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…
    cvelistv5