Philipp 6 Posted September 27, 2001 A security vulnerability exists in Exchange 2000 Outlook Web Access, because it will accept and process a request for an item in an authenticated user´s mailbox without verifying first that the folder structure is valid. An attacker could mount a denial of service attack by repeatedly levying a request for a non-existent but deeply nested folder in his own mailbox. Read more Share this post Link to post