by Kastro
Paper/Archive/CVE-2026-19315

CVE-2026-19315

WatchGuard Fireware OS — Fireware OS Pre-Authentication Type Confusion in iked Allows Remote Code Execution

EPSS 0.7%CVSS 9.3
critical.is priorityof 100
39
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 53.2.532 × 2010.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

A type confusion vulnerability in the iked process of WatchGuard Fireware OS allows a remote unauthenticated attacker to execute arbitrary code by sending specially crafted network traffic.

Affected

ProductAffectedFixed inSource
Fireware OS2025.0 – < 2026.2.22026.2.2CNA
Fireware OS12.0 – < 12.12.212.12.2CNA
Fireware OS2026.3 – < 2026.3.12026.3.1CNA
Fireware OS12.0 – < 12.5.2012.5.20CNA

Scores by source

WatchGuard (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorypsirt.watchguard.com/CVE-2026-19315