CVE-2026-21046

HIGH
MEDIUM Priority: 0.01 BB Relevance: 37/100
Published: 2026-07-10 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: High
UI: None
S: X
AT: None
VC: High
VI: High
VA: High

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.

Bug Bounty Relevance

37 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

8.4 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.13%
Raw Score 0.001290
Percentile 2.5%
Date 2026-11-03

EPSS Trend

2026-11-03
0.00129
2026-11-02
0.00129
2026-11-01
0.00129
2026-10-31
0.00129
2026-10-30
0.00129
2026-10-29
0.00129
2026-10-28
0.00129

Intelligence Sources

nvd ref →