対象のクライアントOS： Windows 11バージョン 25H2 Windows 11バージョン 24H2 Windows 11バージョン 23H2 Windows 10バージョン 22H2 Windows 10 Enterprise LTSC 2021 Windows 10 Enterprise LTSC 2019
対象のサーバーOS： Windows Server 2025 Windows Server バージョン 23H2 Windows Server 2022 Windows Server 2019
対象アプリ： Outlook (classic)
主な症状：
Outlook がフリーズし、”応答しない” と表示される
Outlookを閉じても正常に終了せず、再起動できない
タスク マネージャーで Outlook のプロセスを終了したり、コンピューターを再起動したりせずに Outlook を再度開けない
An Out-of-bounds Write vulnerability in the WatchGuard Fireware OS iked process may allow a remote unauthenticated attacker to execute arbitrary code. This vulnerability affects both the mobile user VPN with IKEv2 and the branch office VPN using IKEv2 when configured with a dynamic gateway peer. If the Firebox was previously configured with the mobile user VPN with IKEv2 or a branch office VPN using IKEv2 to a dynamic gateway peer, and both of those configurations have since been deleted, that Firebox may still be vulnerable if a branch office VPN to a static gateway peer is still configured.
Affected
This vulnerability affects Fireware OS 11.10.2 up to and including 11.12.4_Update1, 12.0 up to and including 12.11.3 and 2025.1.
Resolution
Vulnerable Version
Resolved Version
2025.1
2025.1.1
12.x
12.11.4
12.5.x (T15 & T35 models)
12.5.13
12.3.1 (FIPS-certified release)
12.3.1_Update3 (B722811)
11.x
End of Life
Workaround
If your Firebox is only configured with Branch Office VPN tunnels to static gateway peers and you are not able to immediately upgrade the device to a version of Fireware OS with the vulnerability resolution, you can follow WatchGuard’s recommendations for Secure Access to Branch Office VPNs that Use IPSec and IKEv2 as a temporary workaround.
