CVE Catalog

CVE-2026-21046

HighCVSS 8.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.10%

1th percentile - higher than 1% of all known CVEs

Summary

A time-of-check time-of-use (TOCTOU) race condition exists in the fabricKeymaster trustlet prior to SMR Jul-2026 Release 1. This allows local privileged attackers to execute arbitrary code.

Risk Assessment

The risk involves potential privilege escalation and compromise of the trusted execution environment (TEE), leading to breach of confidentiality and integrity of sensitive data.

Recommendation

It is recommended to immediately apply the patch from SMR Jul-2026 Release 1 for the fabricKeymaster trustlet component.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS