CVE-2026-78009

An out-of-bounds read vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.

Score

CVSS 4.0 8.7 High

Status

Deferred - 5d1c2695-1a31-4499-88ae-e847036fd7e3

Published

2026-08-27

Last modified

2026-09-03

Weaknesses

CWE-125, CWE-20

Affected products

• Fireware Os (Watchguard)

References

• https://psirt.watchguard.com/CVE-2026-78009