Simple definition
Remote code execution allows an actor to run instructions on a remote system outside the intended authorization.
Purpose and use
Impact depends on the affected process’s permissions and the data, services or other machines it can reach.
How does it work?
A flaw in request or file processing can trigger execution. Some RCE flaws require authentication or user interaction; others do not.
Key points
- Example: a vendor advisory reports that an exposed service version can execute code while processing malformed input.
- Confirm versions, prerequisites, exposure and remediation, then investigate signs of exploitation where appropriate.
Points to watch
RCE does not automatically mean administrator access. A fix prevents future exploitation but does not establish that earlier compromise never occurred.
In short
RCE describes unauthorized remote execution; prerequisites and privileges determine its severity.