CVE-2026-19314

HighCVSS 8.7/10Last modified Sep 3, 2026

Description

An integer underflow 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.

Metrics

CVSS 4.0 8.7/10CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weakness enumeration

CWE-191CWE-787

Affected software

VendorProductVersions
WatchGuardFireware OS>= 2025.0, < 2026.2.2; >= 12.0, < 12.12.2; >= 2026.3, < 2026.3.1
WatchGuardFireware OS>= 12.0, < 12.5.20

References

Timeline

Published
Aug 28, 2026
Last modified
Sep 3, 2026
NVD status
Deferred

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