CVE-2026-93862 Fireware OS Out-of-Bounds Read in FireCluster Sync Allows Denial of Service

An out-of-bounds read vulnerability in the FireCluster Sync processing allows an attacker positioned on the cluster interconnect, such as a compromised cluster peer or an on-path network attacker, to repeatedly crash the firewall's cluster synchronization process by sending specially crafted...

CVE-2026-103593 Fireware OS Stack Buffer Overflow in Logging Service Allows Remote Code Execution

A stack-based buffer overflow vulnerability in the Fireware OS logging service allows a network-adjacent attacker who can impersonate or intercept traffic to the configured log server to execute arbitrary code with root privileges by presenting a specially crafted certificate...

CVE-2026-90464 Fireware OS Missing Command Validation allows Authenticated Arbitrary File Modification as Root

An external control of file path vulnerability in a WatchGuard Fireware OS firewall diagnostic command allows a remote, authenticated attacker with at least read-only Device Monitor privileges and access to the management CLI to create, truncate, or overwrite arbitrary files and modify kernel...

CVE-2026-112709 Fireware OS Heap Buffer Overflow in AD Authentication Service Allows Pre-Authentication Remote Code Execution

A heap-based buffer overflow vulnerability in the Fireware OS authentication service allows an attacker who controls or intercepts traffic to the configured Active Directory server to create a denial of service condition and potentially execute arbitrary code by returning a specially crafted...

CVE-2026-113881 Fireware OS Stack Buffer Overflow in VPN Network Access Enforcement Allows Unprivileged Code Execution

A stack-based buffer overflow vulnerability in Fireware OS's VPN Network Access Enforcement process allows an authenticated mobile VPN user to create a denial of service condition and potentially execute arbitrary code as an unprivileged process by sending a specially crafted request...

CVE-2026-104381

A missing authentication vulnerability exists in the Fireware OS FireCluster state synchronization feature. An unauthenticated attacker positioned on the cluster synchronization network segment can send crafted cluster synchronization traffic to force premature VPN tunnel termination , resulting ...

CVE-2026-93866

WatchGuard Fireware OS is susceptible to an integer overflow vulnerability within its WebSocket connection handling used by the Access Portal feature. A remote, unauthenticated attacker can trigger an out-of-bounds write by sending a specially crafted request while the Access Portal is enabled. T...

CVE-2026-111107 Fireware OS NULL Pointer Dereference in Management Interface Allows Unauthenticated Denial of Service

A NULL pointer dereference vulnerability in WatchGuard Fireware OS’s management interface allows a remote, unauthenticated attacker with network access to the management interface to crash the management service by sending a specially crafted login request. Repeated exploitation terminates all...

CVE-2026-93865

A missing authentication vulnerability in the Fireware OS FireCluster synchronization daemon allows a remote, unauthenticated attacker to perform privileged system-level administrative actions . This occurs when the clustering feature is enabled and an attacker sends a specially crafted request t...

CVE-2026-93866 Fireware OS Pre-Authentication Integer Overflow in Access Portal Allows Out-of-Bounds Write

An integer overflow vulnerability in the WebSocket connection handling used by WatchGuard Fireware OS's Access Portal allows a remote, unauthenticated attacker to write beyond the bounds of a heap buffer by sending a specially crafted request while the Access Portal feature is enabled...

CVE-2026-103594

A stack-based buffer overflow exists in the Fireware OS WireGuard configuration processing. A remote attacker with man-in-the-middle TLS-decrypted access between the Firebox and WatchGuard Cloud can tamper with a FireCloud Gateway configuration payload . This vulnerability can lead to a Denial of...

CVE-2026-93865 Fireware OS Missing Authentication in FireCluster Sync Daemon Allows Remote Root Action Injection

A missing authentication vulnerability in the Fireware OS FireCluster synchronization daemon allows a remote, unauthenticated attacker to invoke privileged system-level administrative actions by sending a specially crafted request to the FireCluster management IP when the clustering feature is...

CVE-2026-111107

A NULL pointer dereference vulnerability exists in the management interface of WatchGuard Fireware OS . A remote, unauthenticated attacker with network access to the management interface can crash the management service by sending a specially crafted login request. Repeated exploitation can termi...

CVE-2026-93864

A link following vulnerability exists in the WatchGuard Fireware OS firewall daemon. A local attacker with code execution as a low-privileged system process can overwrite arbitrary files with root privileges and tamper with firewall IP set data. This is achieved by planting a crafted file system ...

EUVD-2026-111157

An integer overflow vulnerability in the WebSocket connection handling used by WatchGuard Fireware OS's Access Portal allows a remote, unauthenticated attacker to write beyond the bounds of a heap buffer by sending a specially crafted request while the Access Portal feature is enabled...

EUVD-2026-111161

A NULL pointer dereference vulnerability in WatchGuard Fireware OS’s management interface allows a remote, unauthenticated attacker with network access to the management interface to crash the management service by sending a specially crafted login request. Repeated exploitation terminates all...

EUVD-2026-111158

A link following vulnerability in WatchGuard Fireware OS’s firewall daemon allows a local attacker with code execution as a low-privileged system process to overwrite arbitrary files with root privileges, and to tamper with firewall IP set data, by planting a crafted file system object and...

EUVD-2026-111159

A stack-based buffer overflow vulnerability in Fireware OS's WireGuard configuration processing allows a remote attacker that has man-in-the-middle TLS-decrypted access between the Firebox and WatchGuard Cloud to create a Denial of Service condition and potentially execute arbitrary code by...

EUVD-2026-111156

A stack-based buffer overflow vulnerability in Fireware OS's SIP proxy allows a remote, unauthenticated attacker to execute arbitrary code by sending a specially crafted request through a policy that uses the SIP proxy...

EUVD-2026-111162

A missing authentication vulnerability in the Fireware OS FireCluster synchronization daemon allows a remote, unauthenticated attacker to invoke privileged system-level administrative actions by sending a specially crafted request to the FireCluster management IP when the clustering feature is...