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High WID-SEC-2026-3646 15 CVEs

WatchGuard Fireware OS: Mehrere Schwachstellen

Published Sep 29, 2026 · Updated Sep 29, 2026 · de-DE

Vendor: WatchGuard Product: Fireware OS

Summary

Ein entfernter Angreifer kann mehrere Schwachstellen in WatchGuard Fireware OS ausnutzen, um beliebigen Code auszuführen – einschließlich Code mit Root-Rechten –, Sicherheitsmaßnahmen zu umgehen, vertrauliche Daten offenzulegen oder zu manipulieren und Denial-of-Service-Zustände zu verursachen.

Product

WatchGuard Fireware OS ist ein proprietäres, Linux-basiertes Betriebssystem, das für den Betrieb und die Verwaltung von WatchGuard-Sicherheitsappliances entwickelt wurde.

Vulnerabilities 15

  • Critical 9.2
    CVE-2026-86131

    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.

    WatchGuard Fireware OS
  • High 8.7
    CVE-2026-81433

    Fireware OS Pre-Authentication Stack Buffer Overflow in fingerd Allows Remote Code Execution

    A stack-based buffer overflow vulnerability in WatchGuard Fireware OS's DHCP fingerprinting daemon (fingerd) allows an unauthenticated attacker with adjacent network access to execute arbitrary code or crash the process by sending a specially crafted DHCP pac…

    WatchGuard Fireware OS
  • High 8.7
    CVE-2026-86104

    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.

    WatchGuard Fireware OS
  • High 8.7
    CVE-2026-86134

    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.

    WatchGuard Fireware OS
  • High 8.6
    CVE-2026-18145

    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 m…

    WatchGuard Fireware OS
  • High 8.2
    CVE-2026-13224

    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.

    WatchGuard Fireware OS
  • High 8.2
    CVE-2026-86128

    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.

    WatchGuard Fireware OS
  • High 8.2
    CVE-2026-86132

    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.

    WatchGuard Fireware OS
  • High 8.2
    CVE-2026-86133

    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 o…

    WatchGuard Fireware OS
  • High 7.5
    CVE-2026-13046

    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 …

    WatchGuard Fireware OS
  • High 7.2
    CVE-2026-86101

    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.

    WatchGuard Fireware OS
  • High 7.1
    CVE-2026-18105

    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 diag…

    WatchGuard Fireware OS
  • High 7.1
    CVE-2026-86136

    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 …

    WatchGuard Fireware OS
  • High 7.1
    CVE-2026-90441

    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 …

    WatchGuard Fireware OS
  • Medium 5.3
    CVE-2026-86105

    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…

    WatchGuard Fireware OS

Revision history

  1. #1

    Initiale Fassung

References