CVE-2026-78008 HIGH

CVE-2026-78008: Fireware OS Authenticated Buffer Overflow in wgagent

Vendor Watchguard
Product Fireware OS
Weakness CWE-787
Published August 27, 2026
Last update August 29, 2026

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality
Integrity

CVSS 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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 27, 2026 CVE published
August 29, 2026 Record updated