EUVD-2025-201300Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/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
High privilege needed to store payload; victim interaction required to trigger; scope change as script runs in another user's browser origin with low C/I impact.
Primary rating from Vendor (5d1c2695-1a31-4499-88ae-e847036fd7e3).
CVSS VectorVendor: 5d1c2695-1a31-4499-88ae-e847036fd7e3
Lifecycle Timeline
4DescriptionCVE.org
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (Gateway Wireless Controller module) allows Stored XSS.This issue affects Fireware OS 11.7.2 up to and including 11.12.4+541730, 12.0 up to and including 12.11.4, 12.5 up to and including 12.5.13, and 2025.1 up to and including 2025.1.2.
AnalysisAI
Stored XSS in WatchGuard Fireware OS's Gateway Wireless Controller module allows an authenticated high-privilege attacker to inject persistent malicious scripts that execute in other privileged users' browsers when they visit the affected management page. All major Fireware OS release branches are affected, spanning 11.7.2 through 2025.1.2 across four distinct version ranges. No public exploit code exists and EPSS stands at 0.03% (9th percentile), indicating very low exploitation probability at time of analysis despite the broad version coverage.
Technical ContextAI
Fireware OS is WatchGuard's proprietary operating system powering its network security appliances. The vulnerable component is the Gateway Wireless Controller module - a web-based management interface used to configure and monitor wireless access points centrally managed through the firewall. CWE-79 (Stored XSS) arises when user-supplied input is persisted to a data store or configuration layer without adequate sanitization, then later re-rendered in a web page without proper output encoding. In this case, a malicious script stored in the wireless controller configuration is served back to subsequent administrators, executing under the management interface's browser origin. Affected CPE: cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*.
RemediationAI
The primary remediation is to upgrade Fireware OS to a version beyond the affected ranges in each applicable branch, per the WatchGuard PSIRT advisory at https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00024. Exact patched release version numbers are not independently confirmed from the available data - consult the advisory directly to determine the minimum safe version per branch. As compensating controls pending patching: restrict access to the Fireware management interface (including the Gateway Wireless Controller) to dedicated, trusted administrative networks or VLANs, reducing the pool of potential attackers who could inject payloads; minimize the number of accounts granted high-privilege administrative access to the appliance; and audit existing admin accounts for unauthorized access that could be leveraged to stage a stored XSS payload.
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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