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-2026-103593 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-2026-93862 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-2026-93434 Fireware OS XPath Injection in SSH Authentication Allows Blind Extraction of Configuration Secrets

An XPath injection vulnerability in WatchGuard Fireware OS's SSH authentication process allows a remote, unauthenticated attacker with access to the management SSH interface to extract sensitive configuration data by submitting a specially crafted request...

CVE-2026-112710 Fireware OS Heap Buffer Overflow in AD Authentication Service Allows Pre-Authentication Remote Code Execution

A heap-based buffer overflow vulnerability exists 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 craft...

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 ...

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...

CVE-2026-93857

A stack-based buffer overflow vulnerability exists in the Fireware OS SIP proxy . A remote, unauthenticated attacker can exploit this by sending a specially crafted request through a policy utilizing the SIP proxy, potentially leading to remote code execution . No specific exploit details or reme...

EUVD-2026-111155

An improper authentication vulnerability in WatchGuard Fireware OS's AuthPoint multi-factor authentication process allows a local, unauthenticated attacker on the appliance to hijack another user's in-progress MFA session by supplying a specially crafted request and convincing the victim user to...

CVE-2026-82332

WatchGuard Fireware OS contains an improper authentication vulnerability (CWE-287, CWE-346) within its AuthPoint multi-factor authentication process. A local, unauthenticated attacker on the appliance can hijack another user's in-progress MFA session by submitting a specially crafted request and ...

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-2026-93866

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-2026-93864

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-2026-111162

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...

EUVD-2026-111160

A missing authentication vulnerability in Fireware OS's FireCluster state synchronization feature allows an unauthenticated attacker positioned on the cluster synchronization network segment to force premature VPN tunnel termination by sending crafted cluster synchronization traffic...

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-2026-93857 Fireware OS Pre-Authentication Stack Buffer Overflow in SIP Proxy Allows Remote Code Execution

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...