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CVE-2026-57907

WatchGuard Endpoint Protection Local Privilege Escalation in Console-Service Communication Allows SYSTEM Code Execution

A privilege escalation vulnerability in WatchGuard Endpoint Protection's inter-process communication between the console and the protection service allows a local, low-privileged authenticated user to execute arbitrary code with SYSTEM privileges by injecting code into the trusted console process and issuing privileged commands to the service.

CVSS 4.0 · 8.5 High EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Endpoint Security
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.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Fireware Os
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.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Fireware Os
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 parameters with root privileges by submitting a specially crafted command. Written content is limited to numeric values.

CVSS 4.0 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Fireware Os
CVE-2026-90442

Fireware OS Authenticated Stack Buffer Overflow in certd Allows Denial of Service

A stack-based buffer overflow vulnerability in the Fireware OS certd process allows an authenticated attacker with access to the Firebox management interface to crash the certificate management service and potentially execute arbitrary code by sending a specially crafted request.

CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Fireware Os
CVE-2026-82332

Fireware OS Improper Authentication in AuthPoint MFA Verification Allows Session Hijacking

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 accept an MFA push notification.

CVSS 4.0 · 5.6 Medium EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Fireware Os
CVE-2026-115495

Mobile VPN with SSL Client for Windows: Cleartext Transmission of VPN Credentials over Local Management Socket

Cleartext Transmission of Sensitive Information vulnerability in the WatchGuard Mobile VPN with SSL client for Windows allows a local attacker who can capture loopback traffic to obtain the user’s VPN username and password.

CVSS 4.0 · 5.7 Medium EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Mobile Vpn With Ssl Client
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.

CVSS 4.0 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Fireware Os
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 crafted response.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Fireware Os
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 response.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Fireware Os
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 active administrator sessions and in-progress management operations and can prevent management of the device. Traffic processing is not affected.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Fireware Os
CVE-2026-104381

Fireware OS Missing Authentication in FireCluster State Sync Allows BOVPN Tunnel Denial of Service

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.

CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Fireware Os
CVE-2026-103594

Fireware OS Stack Buffer Overflow in WireGuard Configuration Allows Remote Code Execution

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 tampering with a FireCloud Gateway configuration payload.

CVSS 4.0 · 9.5 Critical EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Fireware Os
CVE-2026-121640

WatchGuard AuthPoint Gateway Capture-replay Allows Unauthorized Administrative Actions

An Authentication Bypass by Capture-replay vulnerability in WatchGuard AuthPoint Gateway allows an attacker who has observed a legitimate request between AuthPoint Gateway components to replay it and perform unauthorized administrative actions, including disrupting authentication services.

CVSS 4.0 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Authpoint Authentication Gateway
CVE-2026-121639

WatchGuard AuthPoint Gateway Improper Authentication Allows Unauthenticated Denial of Service

A Missing Authentication for Critical Function vulnerability in WatchGuard AuthPoint Gateway allows a remote unauthenticated attacker with network access to the AuthPoint Gateway host to disrupt authentication services and delete the local directory synchronization configuration.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Authpoint Authentication Gateway
CVE-2026-121638

WatchGuard AuthPoint Gateway Improper Certificate Validation Allows Man-in-the-Middle Attacks

An Improper Certificate Validation vulnerability in WatchGuard AuthPoint Gateway allows an attacker with an on-path network position to intercept and modify communications between the AuthPoint Gateway and local authentication providers.

CVSS 4.0 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Authpoint Authentication Gateway
CVE-2026-121637

WatchGuard AuthPoint Gateway Improper HMAC Validation in LDAP Authentication Callback Allows Forged Authentication Results

An improper integrity validation vulnerability in WatchGuard AuthPoint Gateway's LDAP authentication callback allows a network attacker who has obtained a valid header signature to forge the authentication result and transaction identifier in the request body, resulting in unauthorized session outcomes.

CVSS 4.0 · 8.9 High EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Authpoint Authentication Gateway
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 enabled.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Fireware Os
CVE-2026-93864

Fireware OS Link Following in firewalld Allows Local Arbitrary File Overwrite as Root

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 triggering a list update. Written content is partially constrained.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Fireware Os
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.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Vendors
Watchguard
Products
Fireware Os