EUVD-2026-17081
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3Tags
Description
A Cross-Site Request Forgery (CSRF) vulnerability in the WatchGuard Fireware OS WebUI could allow a remote attacker to trigger a denial-of-service (DoS) condition in the Fireware Web UI by convincing an authenticated administrator into visiting a malicious web page.This issue affects Fireware OS: 11.8 through 11.12.4+541730, 12.0 through 12.11.8, and 2025.1 through 2026.1.2.
Analysis
Cross-Site Request Forgery (CSRF) in WatchGuard Fireware OS WebUI allows remote attackers to trigger a denial-of-service condition against the Web UI by tricking an authenticated administrator into visiting a malicious webpage. This affects Fireware OS versions 11.8 through 11.12.4+541730, 12.0 through 12.11.8, and 2025.1 through 2026.1.2. …
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Remediation
Within 24 hours: Identify all WatchGuard Fireware OS instances running versions 11.8-11.12.4+541730, 12.0-12.11.8, or 2025.1-2026.1.2 and document locations and administrative user counts. Within 7 days: Implement network-level restrictions limiting WebUI access to trusted administrative IP ranges only; deploy email security controls to block phishing campaigns targeting firewall administrators; brief IT and security teams on the attack vector and instruct them to avoid clicking links in unsolicited emails directing them to the Fireware WebUI. …
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External POC / Exploit Code
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