CWE-1421
Exposure of Sensitive Information in Shared Microarchitectural Structures during Transient Execution
A processor event may allow transient operations to access architecturally restricted data (for example, in another address space) in a shared microarchitectural structure (for example, a CPU cache), potentially exposing the data over a covert channel.
Impactr finds and proves whether CWE-1421 — or flaws like it — are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.