Downgrade Restrictions
See this Knowledge Base article for a list of downgrade restrictions.
When you downgrade the Fireware OS on your Firebox or XTM device, the firmware on any
paired APdevices is not automatically downgraded. We recommend that you reset the AP
device to its factory-default settings to make sure that it can be managed by the older version of
Fireware OS.
Enhancements and Resolved Issues in Fireware v11.12.1
General
lWhen you enable TDR on a Firebox, a TDR policy is now automatically added to your configuration to
allow connections from TDR Host Sensors on your trusted network to TDR FQDNs on TCPport 443.
lThis release resolves a Cross-Site Request Forgery vulnerability on the Fireware Web UI login page.
[92304]
lThis release updates the lighttpd component used by Fireware to resolve several HTTP proxy port-
related vulnerabilities (CVE-2016-5387, CVE-2106-5388, and CVE-2016-5386). [92514]
lThis release resolves a vulnerability in the Fireware Web UI that could allow an attacker to enumerate
management user login IDs. [92884]
lThis release resolves an issue that caused session IDs to be sent in the URL for authenticated Fireware
Web UIsessions. [92679]
lThis release resolves kernel crashes on Firebox T70, M200 and M300 devices configured in drop-in
mode. [92760, 92677]
lThe Turkish timezone settings have been adjusted to eliminate timezone changes throughout the year.
[92464, 92666]
lYou can now successfully create a backup image for a Firebox T10 with multiple security subscriptions
configured. [92341]
lThe French localization of hotspot vouchers has been updated. [92716]
lThis release resolves an issue that caused the Front Panel to fail to load from Firebox System Manager.
[92771]
lPolicy Manager and Firebox System Manager now negotiate stronger TLS ciphers for managment
connections. [92530]
lThis release resolves an issue that caused Policy Manager to fail to save configurations to Firebox
M400, M500, and M440 devices. [92826]
lThis release resolves an issue that caused Fireware Web UI to fail to display policies after you upgrade
your Firebox to Fireware v11.12. [92932]
lYou can now successfully save configurations that contain policies with IPv6 addresses to Fireboxes
installed with Fireware v11.11.4 or earlier. [92674]
lThis release has optimized memory usage for Firebox T10 and XTM 25/26 devices. [92647, 92341]
Networking and VPN
lPPPoE external interfaces no longer need to restart when you change the NTP, Log Server, or multi-
WAN settings on your Firebox. [90146]
Enhancements and Resolved Issues in Fireware v11.12.1
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