In February, 2019 several major security vulnerabilities were found in the unacev2UnACEv2.dll library which is used by [[WinRAR]] and other archiving products. Since WinACE is [[abandonware]], users are advised against opening ACE archives in WinRAR and possibly other products using this library.<ref>{{cite web|url=https://research.checkpoint.com/extracting-code-execution-from-winrar/|title=Extracting a 19 Year Old Code Execution from WinRAR|date=2019-02-20|website=Check Point Research|language=en-US|access-date=2019-02-26}}</ref> WinRAR stopped supporting ACE as of version 5.70, and similar products are following suit.
