Fireware OS is WatchGuard’s firewall operating system powering Firebox appliances, delivering core security services such as traffic filtering, VPN, and threat prevention.
Overview
Fireware OS is WatchGuard’s firewall operating system powering Firebox appliances, delivering core security services such as traffic filtering, VPN, and threat prevention. Recent reporting shows multiple critical vulnerabilities in Fireware OS being actively exploited in attacks, prompting urgent patches and advisories from authorities like CISA.
Related Threat Clusters
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Critical IKEv2 RCE Vulnerability in WatchGuard Firebox Devices Exploited
WatchGuard Technologies released patches on July 2, 2026, for a critical remote code execution vulnerability (CVE-2026-13368) affecting all supported Firebox firewall models. This flaw, linked to a race condition in the…
3 articles · Updated July 4, 2026 -
Critical RCE Vulnerability in WatchGuard Firebox Firewalls Actively Exploited
WatchGuard has issued a warning about a critical remote code execution vulnerability, tracked as CVE-2025-14733, affecting its Firebox firewalls running Fireware OS 11.x and later. The flaw allows unauthenticated…
20 articles · Updated December 19, 2025 -
Critical Vulnerability in WatchGuard Firebox OS Actively Exploited
A critical vulnerability (CVE-2025-9242) in WatchGuard Firebox OS allows remote unauthenticated attackers to execute arbitrary code. Affected versions include Fireware OS 11.x, 12.x, and 2025.1. The U.S. Cybersecurity &…
3 articles · Updated November 13, 2025 -
Critical Vulnerability in WatchGuard Fireware OS Exposed to Remote Attacks
A critical vulnerability (CVE-2025-9242) in WatchGuard's Fireware OS has been identified, allowing remote unauthenticated attackers to execute arbitrary code on over 54,000 Firebox devices globally. The U.S.…
4 articles · Updated November 14, 2025
Recent Intelligence Reports
- CVE-2025-9242 — www.watchguard.com · July 6, 2026
- WatchGuard Firebox Patches Third Critical IKEv2 RCE in 10 Months, T15/T35 Still Exposed — Techtimes · July 4, 2026
- CISA: 'Critical' WatchGuard Firebox Vulnerability Exploited In Attacks — Crn · December 19, 2025
- WatchGuard: Patch exploited 9.3 flaw in Firebox firmware — Scmagazine · December 19, 2025
- Critical-rated WatchGuard Firebox flaw under active attack — Theregister · December 19, 2025
- WatchGuard sounds alarm as critical Firebox flaw comes under active attack — Theregister · December 19, 2025
- WatchGuard fixes ‘critical’ zero — Csoonline · December 19, 2025
- WatchGuard Firebox iked Out of Bounds Write Vulnerability — Watchguard · December 19, 2025