Summary
Ein Angreifer kann mehrere Schwachstellen in WatchGuard Fireware OS ausnutzen, um erweiterte Berechtigungen zu erlangen – einschließlich Rechte auf Systemebene oder Administratorrechte, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder offenzulegen oder Denial-of-Service-Angriffe durchzuführen.
Product
WatchGuard Fireware OS ist ein proprietäres, Linux-basiertes Betriebssystem, das für den Betrieb und die Verwaltung von WatchGuard-Sicherheitsappliances entwickelt wurde.
Vulnerabilities 18
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Critical 9.5
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 poten…
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Critical 9.2
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…
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Critical 9.2
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 arbitra…
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Critical 9.2
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.
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Critical 9.2
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 managemen…
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Critical 9.2
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…
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Critical 9.1
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 cr…
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High 8.7
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. R…
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High 8.7
Fireware OS Missing Authentication in FireCluster Sync Allows Privilege Escalation
A missing authentication 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 invoke privileged firewall management actions as root by…
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High 8.7
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.
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High 8.6
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 speci…
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High 7.2
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 overwri…
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High 7.2
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 pro…
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High 7.1
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…
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Medium 6.1
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 …
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Medium 6.0
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…
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Medium 5.7
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.
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Medium 5.6
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 requ…
Revision history
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#1
Initiale Fassung
References
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-103593
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-103594
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-104381
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-111107
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-112709
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-112710
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-113881
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-115495
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-82332
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-90442
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-90464
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-90465
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-93434
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-93857
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-93862
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-93864
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-93865
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WatchGuard Security Advisory vom 2026-10-27
https://psirt.watchguard.com/CVE-2026-93866