An improper authentication vulnerability in WatchGuard Fireware OS's AuthPoint multi-factor authentication process allows a local, unauthenticated attacker on the appliance to hijack another user's in-progress MFA session by supplying a specially crafted request and convincing the victim user to accept an MFA push notification.
This vulnerability affects Firebox deployments that are configured with the AuthPoint integration.
WatchGuard is not aware of any exploitation of this vulnerability in the wild.
Fireware OS 2026.4, Fireware OS 12.12.4