CVE-2026-6787

Usage of a hard-coded cryptographic key in WatchGuard Agent allows inclusion of code into existing process

Use of Hard-coded Cryptographic Key vulnerability in WatchGuard Agent on Windows allows Inclusion of Code in Existing Process.

CVSS 4.0 · 8.5 High EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Agent Single Watchguard Agent Watchguard Agent

CVE-2026-41288

WatchGuard Agent on Windows Privilege Escalation Vulnerability

Incorrect permission assignment for a resource in the patch management component of the WatchGuard Agent on Windows allows an authenticated local user to elevate their privileges to NT AUTHORITY\\SYSTEM.

CVSS 4.0 · 7.3 High EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Agent Single Watchguard Agent Watchguard Agent

CVE-2026-41286

Stack-based Buffer Overflow in WatchGuard Agent Discovery Service on Windows Causes Denial of Service - Variant B

Stack-based Buffer Overflow vulnerability in the WatchGuard Agent discovery service on Windows allows Overflow Buffers. An unauthenticated attacker on the same local network could exploit this vulnerability to crash the agent service.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Agent Single Watchguard Agent Watchguard Agent

CVE-2026-41287

Stack-based Buffer Overflow in WatchGuard Agent Discovery Service on Windows Causes Denial of Service - Variant A

Stack-based Buffer Overflow vulnerability in the WatchGuard Agent discovery service on Windows allows Overflow Buffers. An unauthenticated attacker on the same local network could exploit this vulnerability to crash the agent service.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Agent Single Watchguard Agent Watchguard Agent

CVE-2026-3344

WatchGuard Firebox System Integrity Check Bypass

A vulnerability in WatchGuard Fireware OS may allow an attacker to bypass the Fireware OS filesystem integrity check and maintain limited persistence via a maliciously-crafted firmware update package.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Firebox M270 Firebox M290 Firebox M295 and 37 more

CVE-2026-3343

WatchGuard Firebox Reflected Cross-Site-Scripting (XSS) Vulnerability in Fireware Web UI

A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management user's browser when they click on a specially crafted link.

CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Firebox M270 Firebox M290 Firebox M295 and 35 more

CVE-2025-13940

WatchGuard Firebox Boot Time System Integrity Check Bypass

An Expected Behavior Violation [CWE-440] vulnerability in WatchGuard Fireware OS may allow an attacker to bypass the Fireware OS boot time system integrity check and prevent the Firebox from shutting down in the event of a system integrity check failure. The on-demand system integrity check in the Fireware Web UI will correctly show a failed system integrity check message in the event of a failure.

CVSS 4.0 · 6.7 Medium EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Firebox M270 Firebox M290 Firebox M370 and 30 more

CVE-2025-1545

WatchGuard Firebox XPath Injection Vulnerability in Web CGI

An XPath Injection vulnerability in WatchGuard Fireware OS may allow a remote unauthenticated attacker to retrieve sensitive information from the Firebox configuration through an exposed authentication or management web interface. This vulnerability only affects Firebox systems that have at least one authentication hotspot configured.

CVSS 4.0 · 8.2 High EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Firebox M270 Firebox M290 Firebox M370 and 32 more

CVE-2025-13939

WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Gateway Wireless Controller

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.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Firebox M270 Firebox M290 Firebox M370 and 32 more

CVE-2025-13938

WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Autotask Technology Integration Configuration

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (Autotask Technology Integration module) allows Stored XSS.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Firebox M270 Firebox M290 Firebox M370 and 32 more

CVE-2025-13937

WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in ConnectWise Technology Integration Configuration

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (ConnectWise Technology Integration module) allows Stored XSS.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Firebox M270 Firebox M290 Firebox M370 and 32 more

CVE-2025-13936

WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Tigerpaw Technology Integration Configuration

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (Tigerpaw Technology Integration module) allows Stored XSS.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Firebox M270 Firebox M290 Firebox M370 and 32 more

CVE-2025-12196

WatchGuard Firebox Authenticated Out of Bounds Write in Management CLI Ping Command

An Out-of-bounds Write vulnerability in WatchGuard Fireware OS's CLI could allow an authenticated privileged user to execute arbitrary code via a specially crafted CLI command.

CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Firebox M270 Firebox M290 Firebox M370 and 32 more

CVE-2025-12195

WatchGuard Firebox Authenticated Out of Bounds Write in Management CLI IPSec Configuration

An Out-of-bounds Write vulnerability in WatchGuard Fireware OS's CLI could allow an authenticated privileged user to execute arbitrary code via specially crafted IPSec configuration CLI commands.

CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Firebox M270 Firebox M290 Firebox M370 and 32 more

CVE-2025-11838

WatchGuard Firebox iked Memory Corruption Vulnerability

A memory corruption vulnerability in WatchGuard Fireware OS may allow an unauthenticated attacker to trigger a Denial of Service (DoS) condition in the Mobile User VPN with IKEv2 and the Branch Office VPN using IKEv2 when configured with a dynamic gateway peer.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Firebox M270 Firebox M290 Firebox M370 and 30 more

CVE-2025-12026

WatchGuard Firebox Authenticated Out of Bounds Write in certd

An Out-of-bounds Write vulnerability in WatchGuard Fireware OS’s certificate request command could allow an authenticated privileged user to execute arbitrary code via specially crafted CLI commands.

CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Firebox M270 Firebox M290 Firebox M370 and 32 more

CVE-2025-1549

WatchGuard Mobile VPN with SSL Local Privilege Escallation

A local privilege escalation vulnerability in the WatchGuard Mobile VPN with SSL client on Windows enables a local user to execute arbitrary commands with elevated privileges on the Windows system. This vulnerability is an additional unmitigated attack path for CVE-2024-4944. This vulnerability is resolved in the Mobile VPN with SSL client for Windows version 12.11.5

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft Watchguard

Products

Windows Mobile Vpn With Ssl Mobile Vpn With Ssl Client

CVE-2025-9242

WatchGuard Firebox iked Out of Bounds Write Vulnerability

An Out-of-bounds Write vulnerability in the WatchGuard Fireware OS iked process may allow a remote unauthenticated attacker to execute arbitrary code. This vulnerability affects both the mobile user VPN with IKEv2 and the branch office VPN using IKEv2 when configured with a dynamic gateway peer. If the Firebox was previously configured with the mobile user VPN with IKEv2 or a branch office VPN using IKEv2 to a dynamic gateway peer, and both of those configurations have since been deleted, that Firebox may still be vulnerable if a branch office VPN to a static gateway peer is still configured.

CVSS 4.0 · 9.3 Critical EPSS 92.2% KEV · Listed

Vendors

Watchguard

Products

Firebox M270 Firebox M290 Firebox M295 and 37 more

CVE-2025-6999

WatchGuard Firebox Authentication Portal Request Smuggling Vulnerability

An HTTP Request Smuggling [CWE-444] vulnerability in the Authentication portal of WatchGuard Fireware OS allows a remote attacker to evade request parameter sanitation and perform a reflected self-Cross-Site Scripting (XSS) attack. WatchGuard does not believe there is a practical exploit chain with a meaningful security impact for this vulnerability.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Fireware Fireware Os

CVE-2025-1547

WatchGuard Firebox Authenticated Stack Overflow in Certificate Request Command

A stack-based buffer overflow vulnerability [CWE-121] in WatchGuard Fireware OS's certificate request command could allow an authenticated privileged user to execute arbitrary code via specially crafted CLI commands.

CVSS 4.0 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Firebox M270 Firebox M290 Firebox M370 and 26 more