Watchguard XTM 2 Series, XTM 3 Series, XTM 5 Series, XTM 8 Series – Fireware XTM OS 11.5.2 – CSP1 Build # 338385

11.5.2 – CSP1 Build # 338385 resolves the following issues:

BUG65256: Iked periodically stack traces eip=0x080648e6

BUG65047: Eicar attachment with password encrypted through GAV

BUG64897: support.tgz fails to write to USB when usb diagnostics enable is used from CLI

BUG64883: UTF8 encoded X-WatchGuard-AntiVirus header breaks attachments with long filenames

BUG65505: possible issue in chunking handling of the http proxy

BUG61091: Firebox cluster A/P, complete lockup

BUG59953: Kernel panic

BUG65252: External I/F link status shows down on Bridge mode

BUG60037: Traffic disrupted during config save with a large # of 1 to 1 Nat entries

BUG64920: Shrew client cannot connect with static IPs on 11.5.1

BUG65333: BOVPN latency is too high in 11.5.1

BUG65430: kernel reporting hung sm task after bootup

Bug65591: XTM830 the throughout will go down when traffic goes though many secondary IPs on external and Vlans on Trusted

RFE63940, BUG62222,BUG56839,BUG64511 : reduce the memory spike during signature update.  Reduced memory during signature update will help resolve occurrence of GAV Job Open Failed errors and Proxy failures due to reaching low memory threshold.
BUG64546, BUG64857: changes to resolve file system writing error introduced in v11.5.1 on XTM 21-23 models.   The file system error caused several problems such as; management access stops, wireless stops working, new connections through the Firebox may fail.

You can request 11.5.2 – CSP1 Build # 338385 from Watchguard Support by logging a support case online, they should then be able to provide an ftp download link and appropriate credentials.   Please note that Watchguard CSP releases are cumulative so you should only need to apply the latest to ensure that you also have any previous fixes.