patch
termprogrammingops culturesecurity
A change applied to existing software to fix a defect or close a vulnerability.
The word comes from the literal era, when a patch was tape covering a hole in a punched card. In security work, patching is the least glamorous and most effective control there is, because most breaches exploit something with a fix already published. The practical difficulty is never the patch itself but the change window: proving the fix will not break production is what patch management actually consists of.
Also known as: patching, security patch, update