CVE-2026-78010 HIGH

CVE-2026-78010: Fireware OS Stack-Based Buffer Overflow in iked Allows Unauthenticated Denial of Service

Vendor Watchguard
Product Fireware OS
Weakness CWE-121
Published August 27, 2026
Last update August 28, 2026
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

A stack-based buffer overflow vulnerability in the WatchGuard Fireware OS iked process iallows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.

Key dates

02Disclosure timeline

August 27, 2026 CVE published
August 28, 2026 Record updated