The present invention selectively and quickly provides a temporary measure to a specific problem in a large-scale network constructed using a virtualization infrastructure.　Provided is a network management device including: a configuration information storage unit that stores configuration information of devices and/or functions constituting a virtualization environment of a network; an attribute information acquisition unit that acquires, as attribute information of a workaround for a specific problem, information related to a device and/or a function to which the workaround is to be applied; a target extraction unit that extracts the device and/or the function to which the workaround is to be applied by referring to the configuration information stored in the configuration information storage unit on the basis of the attribute information acquired by the attribute information acquisition unit; and an execution requesting unit that requests the execution of the workaround on the device and/or the function extracted by the target extraction unit.