There exist a special program from SDI, called SDI Convert that is able to convert CGM graphics to many graphics format including the DWG.
Convert Computer graphics metafile to AutoCAD drawing.
We found 3 software records in the database related to .cgm to .dwg file format conversion.
Microsoft Windows software - convert cgm to dwg on Windows
A drawing software used to create technical illustrations and graphics
Convert from cgm file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned cgm to dwg. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A CAD CGM converter
A set of applications used by professional graphic designers