Forwarded from Taiwan Computer Emergency Response Coordination Center Cybersecurity Information Alert TWCERTCC-200-202609-00000005

[Content Description]
WatchGuard has released a major security vulnerability advisory for its Fireware OS iked(CVE-2026-19313、CVE-2026-19315、CVE-2026-19318), all with a CVSS 4.x score of 9.3.
CVE-2026-19313, this is a heap overflow vulnerability that allows unauthenticated remote attackers to execute arbitrary code by using carefully crafted network traffic.
CVE-2026-19315, this is a type confusion vulnerability that allows unauthenticated remote attackers to trigger memory handling errors by using specially crafted network packets, which may further lead to arbitrary code execution.
CVE-2026-19318, this is a Stack-based Buffer Overflow, which allows unauthenticated remote attackers to execute arbitrary code by using specially crafted network packets.

[Affected Platforms]
Default - Fireware OS 2025.0 to 2026.2.2(exclusive) versions
Default - Fireware OS 12.0 to 12.12.2(exclusive) versions
T15/T35 - Fireware OS 12.0 to 12.5.20(exclusive) versions
T15/T35 - Fireware OS 2026.3 to 2026.3.1(exclusive) versions
Default - Fireware OS 2026.3 to 2026.3.1(exclusive) versions

[Recommended Measures]
Please update to the following versions:
【CVE-2026-19313、CVE-2026-19318】 Default - Fireware OS 2026.2.2(inclusive) or later versions、 Default - Fireware OS 12.12.2(inclusive) or later versions、 T15/T35 - Fireware OS 12.5.20(inclusive) or later versions、 T15/T35 - Fireware OS 2026.3.1(inclusive) or later versions

【CVE-2026-19315】 Default - Fireware OS 2026.2.2(inclusive) or later versions、 Default - Fireware OS 12.12.2(inclusive) or later versions、 Default - Fireware OS 2026.3.1(inclusive) or later versions T15/T35 - Fireware OS 12.5.20(inclusive) or later versions

[References]
1. https://www.twcert.org.tw/tw/cp-169-11187-6a4cd-1.html