Common Weakness Enumeration

    CWE Definition / CWE-1303

    CWE-1303: Non-Transparent Sharing of Microarchitectural Resources

    Hardware structures shared across execution contexts (e.g., caches and branch predictors) can violate the expected architecture isolation between contexts.

    Published:8 May 2020
    Organization:MITRE
    Modified:11 Dec 2025

    Related Weakness

    CWE-1189: Improper Isolation of Shared Resources on System-on-a-Chip (SoC)

    CWE-203: Observable Discrepancy

    CWE-1303: Non-Transparent Sharing of Microarchitectural… | CVE-DB