InfoGuard Labs disclosed seven vulnerabilities in SEPPMail Secure E-Mail Gateway, including unauthenticated RCE vectors and a publicly documented exploit chain enabling full appliance takeover and interception of all mail in transit. A clean patch is available at version 15.0.4; prior releases 15.0.2.1 through 15.0.3 only partially remediate the risk. Organizations running SEPPMail for enterprise email encryption should treat this as an emergency patch cycle — the exploit chain is public and the appliance processes decrypted mail.