The news today is full of a new deserialization vulnerability in Oracle WebLogic. This affects all current versions of the product (the POC is against 10.3, but 12.x versions are also affected). The vulnerability affects the wls9_async_response package (which is not included by default in all builds), so the workaround is to either ACL the Z/_async/* and /wls-wsat/* paths, or delete wls9_async_response.war. A successful attack gets the attacker remote code exec on the vulnerable server.
Article Link: https://isc.sans.edu/diary/rss/24880