CVE-2026-19316

UNKNOWN 0.0

Fireware OS Pre-Authentication Double Free in iked Allows Denial of Service (DoS)

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

A double-free 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.

CWE	CWE-415 CWE-416
Vendor	watchguard
Product	fireware os
Published	Aug 27, 2026

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Affected Versions

WatchGuard / Fireware OS

2025.0 < 2026.2.2 12.0 < 12.12.2

WatchGuard / Fireware OS

12.0 < 12.5.20

References

NVD ↗ CVE.org ↗ EPSS Data ↗

psirt.watchguard.com: https://psirt.watchguard.com/CVE-2026-19316

Credits

McCaulay Hudson (@_McCaulay) of watchTowr