PT-2026-29023 · Watchguard · Fireware Os

Simone Paganessi · Published 2026-03-30 · Updated 2026-03-30 · CVE-2026-4315

Mitre

CVSS v4.0

7.1

High

AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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.

Fix

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2026-4315

Affected Products

Fireware Os

References · 2

• https://watchguard.com/wgrd-psirt/advisory/wgsa-2026-00006 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-4315 · Security Note