VirtualBox v5.2.28 is released. VirtualBox is a general-purpose full virtualizer for x86/x64 hardware. Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software.

VirtualBox v5.2.22 Changelog:
User interface: do not change the file and path name when changing the export file format (bug #18476)
User interface: fixed operation progress when deleting snapshots
Network: fixed unwanted padding bytes in Windows host adaptor network packets (bug #18202 and bug #18355)
Windows host: fix unwanted wake-ups from standby (bug #18549)
Windows host: disallow Pause as a host key (bug #18482)
Linux host and guest: support Linux 5.0 and 5.1, thank you Valdis Kletnieks (see also bug #18515)
Linux host: support kernel 4.4.169 (bug #18315)
Linux host: fix logging when building Linux kernel modules (bug #18226)
Linux host: clarified building Linux host drivers with secure boot (bug #18312)
Windows guests: fixed running applications which use complex display topologies with WDDM driver, fixed Skype for Business hangs (bug #17092)

Download: VirtualBox v5.2.28
Source: Here