CVE-2015-4217: The remote-support feature on Cisco Web Security Virtual Appliance (WSAv), Email Security Virtual Appliance...

Security readout for executives and security teams

Some Cisco virtual security appliances shipped with the same SSH host keys across different customer installations. That weakens the trust normally provided by SSH and could let an attacker with a matching private key from another installation undermine cryptographic protection. Exposure is limited to Cisco WSAv, ESAv, and SMAv virtual appliances using affected builds before 2015-06-25, especially where remote-support SSH is enabled or reachable. Treat this as a targeted infrastructure hygiene issue. It weakens administrative trust controls on security appliances, but the provided evidence does not indicate active mass exploitation. Mitigation focus: Review Cisco advisory cisco-sa-20150625-ironport for fixed software and required key-handling steps.; Inventory Cisco WSAv, ESAv, and SMAv virtual appliances and identify builds before 2015-06-25.; Restrict remote-support SSH access to trusted management networks while remediation is planned..

Prepared

Jun 13, 2026, 22:22 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.