CVE-2026-78008 - Vulnerability Details - OpenCVE

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.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Watchguard	Fireware Os

No data.

No data.

References

Link	Providers
https://psirt.watchguard.com/CVE-2026-78008

History

Sat, 29 Aug 2026 04:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Thu, 27 Aug 2026 18:00:00 +0000

Type	Values Removed	Values Added
Description		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.
Title		Fireware OS Authenticated Buffer Overflow in wgagent
First Time appeared		Watchguard Watchguard fireware Os
Weaknesses		CWE-787
CPEs		cpe:2.3:a:watchguard:fireware_os::::::::
Vendors & Products		Watchguard Watchguard fireware Os
References		https://psirt.watchguard.com/CVE-2026-78008
Metrics		cvssV4_0 `{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}`

MITRE

Status: PUBLISHED

Assigner: WatchGuard

Published: 2026-08-27T23:24:32.515Z

Updated: 2026-08-29T03:56:05.373Z

Reserved: 2026-08-21T21:46:38.156Z

Link: CVE-2026-78008

Vulnrichment

Updated: 2026-08-28T17:37:10.300Z

NVD

Status : Deferred

Published: 2026-08-28T02:16:22.167

Modified: 2026-08-29T04:18:06.563

Link: CVE-2026-78008

Redhat

No data.

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