I'm not exactly sure Commie regime would survive victorious CP. I see Germans meddling in Russian civil war much more decisively. First, because German colonial style was always more "proactive", so to speak, they did not hesitate to send their troops to deal with a threat directly if local proxies were failing. Second, because this (European part of Russian Empire) area is so much more important for CP than it was for Entente powers IOTL. Eastern Ukraine is far-off land for Britons, French, and their marionettes. However, it is next-door neighbour for CP's Mitteleuropa (add Galician-Ukrainian problem and things are starting to get even more exciting). So, Germans could just crush Sovet regime and replace it with something else (given sore lack of powerful political movement but Bolshevik in IOTL, it is most likely that this "something else" would be dismembered Russia, ruled by local cliques, a-la China of warlord era). This "something else" (married to propaganda campaign describing dangers of Russian Imperialism) would be enough to keep EE underlings of shining Mitteleuropa in check (Poles might be a problem, though).
Would USSR somehow survive CP's pressure (after all, don't underestimate allure of Bolshevik ideas and their drive to reunite the country), it could get pretty strong. IOTL industrial cooperation between USSR and Weimar Germany had been marred by technological gap (barely literate peasants, hastily trained as industrial workers, could not operate German machinery). ITTL France becomes USSR's natural ally, and French designed their solution with much less capable operators in mind (besides, both countries shared fondness for "unorthodox designs", aimed to overcome industrial superiority of their adversaries). Soviet industrialization, based on French support, could be no less successfull than IOTL (even taking into account that we're talking about rump USSR, basically Russian Federation of today plus Turkestan).