CVE Intelligence

WatchGuard Fireware OS vulnerabilities

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Published CVEs affecting WatchGuard Fireware OS: 63 record(s), with affected versions and fixes.

CVE-2026-86134 High · 7.5 CWE-476 Sep 30, 2026
Fireware OS Pre-Authentication NULL Pointer Dereference Allows Remote Denial of Service
A NULL pointer dereference vulnerability in the WatchGuard Fireware OS authentication process allows a remote, unauthenticated attacker to crash the management daemon by sending a specially request to the login interface, resulting in a denial of service.
CVE-2026-90441 High · 8.1 CWE-200 Sep 29, 2026
Fireware OS Missing Authorization in wgagent Management API Allows Denial of Service - Variant B
A missing authorization vulnerability in the wgagent management daemon's session initialization function allows an authenticated, low-privileged user (including a read-only or guest administrator account) to crash the wgagent process and read arbitrary files accessible to the daemon by submitting a specially crafted management API request.
CVE-2026-86136 High · 8.1 CWE-22 Sep 29, 2026
Fireware OS Missing Authorization in wgagent Management API Allows Denial of Service - Variant A
A missing authorization vulnerability in the wgagent management daemon's session initialization function allows an authenticated, low-privileged user (including a read-only or guest administrator account) to crash the wgagent process and read arbitrary files accessible to the daemon by submitting a specially crafted management API request.
CVE-2026-86133 High · 7.5 CWE-191 Sep 29, 2026
Fireware OS Pre-Authentication Integer Underflow in iked Allows Remote Denial of Service
An integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked) allows a remote attacker who has completed the initial IKEv2 handshake to crash the iked process by sending a specially crafted encrypted IKEv2 message, resulting in a denial of service.
CVE-2026-86132 High · 7.5 CWE-191 Sep 29, 2026
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-2026-86131 Critical · 9.8 CWE-94 Sep 29, 2026
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-2026-86128 High · 7.5 CWE-476 Sep 29, 2026
Fireware OS NULL Pointer Dereference in NetFlow IPv6 Traffic Processing Allows Remote Denial of Service
A NULL pointer dereference vulnerability in Fireware OS's NetFlow packet-processing feature allows a remote, unauthenticated attacker to cause a denial of service by sending a specially crafted IPv6 packet.
CVE-2026-86105 High · 7.1 CWE-22 Sep 29, 2026
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 access.
CVE-2026-86104 High · 7.5 CWE-400 Sep 29, 2026
Fireware OS Resource Exhaustion in Login Process Allows Denial of Service
An uncontrolled resource consumption vulnerability in the Fireware OS login process (wgagent) allows a remote, unauthenticated attacker to cause a denial of service by sending a specially crafted request.
CVE-2026-86101 Medium · 6.5 CWE-285 Sep 29, 2026
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-2026-18145 High · 7.2 CWE-121 Sep 29, 2026
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-2026-18105 Medium · 6.5 CWE-400 Sep 29, 2026
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 Medium · 4.9 CWE-22 Sep 29, 2026
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-2026-13046 High · 7.2 CWE-502 Sep 29, 2026
Fireware OS Deserialization of Untrusted Data in samld Allows Remote Code Execution
A deserialization of untrusted data vulnerability in WatchGuard Fireware OS's SAML single sign-on session handling (samld) allows an attacker who has already obtained the ability to write files on the appliance to execute arbitrary code in the context of the samld service by causing samld to load a maliciously crafted session file.
CVE-2026-78011 High · 8.7 CWE-191 Aug 27, 2026
Fireware OS Integer Underflow in Iked Allows Unauthenticated Denial of Service (DoS)
An integer underflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.
CVE-2026-78009 High · 8.7 CWE-20 Aug 27, 2026
Fireware OS Out-of-Bounds Read in iked Allows Unauthenticated Denial of Service (DoS)
An out-of-bounds read vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.
CVE-2026-78008 High · 8.6 CWE-787 Aug 27, 2026
Fireware OS Authenticated Buffer Overflow in wgagent
A buffer overflow vulnerability in the WatchGuard Fireware OS Management Web UI allows an authenticated administrator with network access to cause a denial of service (DoS) condition or potentially execute arbitrary code by sending specially crafted network traffic.
CVE-2026-19318 Critical · 9.3 CWE-121 Aug 27, 2026
Fireware OS Pre-Authentication Stack Buffer Overflow in iked Allows Remote Code Execution
A stack-based buffer overflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to execute arbitrary code by sending specially crafted network traffic.
CVE-2026-19317 High · 8.7 CWE-125 Aug 27, 2026
Fireware OS Pre-Authentication Out-of-Bounds Read in iked Allows Denial of Service (DoS)
An out-of-bounds read vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.
CVE-2026-19316 High · 8.7 CWE-415 Aug 27, 2026
Fireware OS Pre-Authentication Double Free in iked Allows Denial of Service (DoS)
A double-free vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.
CVE-2026-19315 Critical · 9.3 CWE-125 Aug 27, 2026
Fireware OS Pre-Authentication Type Confusion in iked Allows Remote Code Execution
A type confusion vulnerability in the iked process of WatchGuard Fireware OS allows a remote unauthenticated attacker to execute arbitrary code by sending specially crafted network traffic.
CVE-2026-19314 High · 8.7 CWE-191 Aug 27, 2026
Fireware OS Integer Underflow in iked Allows Unauthenticated Denial of Service (DoS)
An integer underflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.
CVE-2026-19313 Critical · 9.3 CWE-122 Aug 27, 2026
Fireware OS Pre-Authentication Heap Buffer Overflow in iked Allows Remote Code Execution
An heap overflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to execute arbitrary code by sending specially crafted network traffic.
CVE-2026-13086 Critical · 9.3 CWE-121 Aug 27, 2026
Fireware OS Stack-Based Buffer Overflow in Mobile Security epm Endpoint
A stack-based buffer overflow in the epm (Endpoint Protection Manager) service used by the deprecated Mobile Security feature in WatchGuard Fireware OS allows an unauthenticated remote attacker to execute arbitrary code.
CVE-2026-81851 Medium · 6.9 CWE-122 Aug 27, 2026
Fireware OS Heap-Based Buffer Overflow in iked Allows Denial of Service
A heap-based buffer overflow vulnerability in Fireware OS's iked process allows an authenticated administrator to crash the IKE daemon (iked), resulting in a denial of service, by saving a specially crafted configuration.