Patching in networking refers to the process of distributing and implementing updates to software, typically to address security and functionality issues. It is the mechanism by which companies obtain, verify, and install patches, i.e. code or data changes intended to update, improve, or protect existing software, to preserve operational effectiveness or mitigate vulnerabilities. Patches are designed to repair an identified vulnerability or flaw following the release of an application or software. Unpatched software can turn the device into a vulnerable exploit target. Patch management is a vital part of every vulnerability management solution.

In networking, patching can also refer to the use of patch panels, which are mounted hardware assemblies that contain ports used to connect and manage incoming and outgoing LAN cables. Patch panels use patch cords to create interconnections between the terminated patch panel and the network device, such as an Ethernet switch, router, or firewall. They make it easy to rearrange circuits and devices by moving the patch cables between network devices.

In summary, patching in networking refers to the process of distributing and implementing updates to software to address security and functionality issues, as well as the use of patch panels to manage incoming and outgoing LAN cables.