Patch review is the process of evaluating a software fix after release before it is widely deployed. Security teams check what the patch changes, which vulnerabilities it closes, whether it affects dependent systems, and whether it introduces regressions or compatibility issues. A good review helps defenders decide how urgently to deploy the update and where testing is needed first.
In cyber security, patch review is critical because attackers often target known flaws soon after a fix becomes public. Defenders use review steps to verify vendor advisories, map affected assets, and prioritize internet-facing or high-value systems. In practice, patch review can mean testing in a staging environment, confirming rollback options, and coordinating maintenance windows so that security improvements do not break essential services.