CVE-2026-13046

A deserialization of untrusted data vulnerability exists in the SAML single sign-on session handling (samld) component of WatchGuard Fireware OS . An attacker who has already successfully obtained the ability to write files on the appliance can execute arbitrary code in the context of the samld s...

CVE-2026-86133

An integer underflow vulnerability exists in the WatchGuard Fireware OS IKE daemon (iked ). A remote attacker who has completed the initial IKEv2 handshake can crash the iked process by sending a specially crafted encrypted IKEv2 message, leading to a denial of service . No specific exploit detai...

CVE-2026-86132

A pre-authentication integer underflow vulnerability exists in the WatchGuard Fireware OS IKEv2 daemon (iked ). This flaw allows a remote, unauthenticated attacker to cause a Denial of Service (DoS) by crashing the process. The attack is triggered by sending a specially crafted encrypted IKEv2 me...

CVE-2026-86132 Fireware OS Pre-Authentication Integer Underflow in iked Allows Denial of Service

An integer underflow vulnerability in the WatchGuard Fireware OS IKEv2 daemon iked allows a remote, unauthenticated attacker to crash the process by sending a specially crafted encrypted IKEv2 message negotiated with an AES-GCM cipher suite...

CVE-2026-86105 Fireware OS Improper Authorization in Access Portal Reverse Proxy

An improper authorization vulnerability in Fireware OS's Access Portal reverse proxy allows an authenticated, low-privileged Access Portal user to access other web applications they are not authorized for by sending a specially crafted request for a different resource which they are authorized to...

CVE-2026-18145 Fireware OS Stack-based Buffer Overflow in spamd Allows Remote Code Execution

A stack-based buffer overflow vulnerability in the spamBlocker spamd service of WatchGuard Fireware OS allows an authenticated attacker with administrator privileges to crash the service or potentially execute arbitrary code by sending a specially crafted management request...

CVE-2026-86101 Fireware OS Authorization Bypass in SAML Login Allows Unauthorized SSLVPN Access

An improper authorization vulnerability in WatchGuard Fireware OS's SAML login process allows a remote, authenticated SAML user with access only to the Access Portal to obtain unauthorized Mobile VPN with SSL access through a specially crafted request...

CVE-2026-18105 Fireware OS Uncontrolled Resource Consumption in Diagnostic Tasks Allows Denial of Service

An uncontrolled resource consumption vulnerability in Fireware OS's diagnostic tasks feature allows a low-privileged, authenticated user to cause a denial of service of the system's diagnostic tools by repeatedly starting and aborting a specially crafted diagnostic task through the web UI...

CVE-2026-90441

The Fireware OS is affected by a missing authorization vulnerability in the wgagent management daemon's session initialization function. An authenticated, low-privileged user—such as a guest or read-only administrator—can submit a specially crafted management API request to crash the wgagent proc...

CVE-2026-18105 Fireware OS Uncontrolled Resource Consumption in Diagnostic Tasks Allows Denial of Service

An uncontrolled resource consumption vulnerability in Fireware OS's diagnostic tasks feature allows a low-privileged, authenticated user to cause a denial of service of the system's diagnostic tools by repeatedly starting and aborting a specially crafted diagnostic task through the web UI...

CVE-2026-13224 Fireware OS Path Traversal in WebUI Management Agent Allows Arbitrary Local File Read

A path traversal vulnerability in the Fireware OS WebUI management agent allows an authenticated administrator to read or list arbitrary files on the local filesystem by sending a specially crafted management request...

CVE-2026-86131 Fireware OS Code Injection in BOVPN Over TLS Client Allows Remote Code Execution

A code injection vulnerability in WatchGuard Fireware OS's BOVPN Over TLS client configuration handling allows an attacker who controls the remote VPN server to execute arbitrary commands as root on the connecting Firebox...

CVE-2026-18105

A vulnerability in Fireware OS allows a low-privileged, authenticated user to cause a denial of service (DoS) of the system's diagnostic tools. The root cause is an uncontrolled resource consumption flaw within the diagnostic tasks feature. An attacker can trigger this by repeatedly starting and ...

CVE-2026-86131 Fireware OS Code Injection in BOVPN Over TLS Client Allows Remote Code Execution

A code injection vulnerability in WatchGuard Fireware OS's BOVPN Over TLS client configuration handling allows an attacker who controls the remote VPN server to execute arbitrary commands as root on the connecting Firebox...

CVE-2026-81433

WatchGuard Fireware OS is affected by a stack-based buffer overflow vulnerability in its DHCP fingerprinting daemon (fingerd ). An unauthenticated attacker with adjacent network access can exploit this by sending a specially crafted DHCP packet to execute arbitrary code or cause a process crash. ...

CVE-2026-86101

A remote, authenticated SAML user can exploit an improper authorization vulnerability in the WatchGuard Fireware OS SAML login process. By sending a specially crafted request, an attacker with legitimate access only to the Access Portal can obtain unauthorized Mobile VPN with SSL access . No spec...

CVE-2026-86131

A code injection vulnerability exists in the WatchGuard Fireware OS during the handling of BOVPN Over TLS client configurations. This flaw allows an attacker who controls a remote VPN server to execute arbitrary commands with root privileges on the connecting Firebox . No specific patch versions ...

CVE-2026-86128

A NULL pointer dereference vulnerability exists in the Fireware OS NetFlow packet-processing feature. This flaw allows a remote, unauthenticated attacker to trigger a denial of service (DoS) by sending a specially crafted IPv6 packet . No specific affected versions, remediation steps, or exploita...

CVE-2026-81433 Fireware OS Pre-Authentication Stack Buffer Overflow in fingerd Allows Remote Code Execution

A stack-based buffer overflow vulnerability in WatchGuard Fireware OS's DHCP fingerprinting daemon fingerd allows an unauthenticated attacker with adjacent network access to execute arbitrary code or crash the process by sending a specially crafted DHCP packet...

CVE-2026-18145

The WatchGuard Fireware OS contains a stack-based buffer overflow vulnerability within the spamBlocker (spamd) service. An authenticated attacker possessing administrator privileges can exploit this flaw by sending a specially crafted management request. Successful exploitation could result in a ...