Kiteworks Urges Server Shutdown Over Advanced Forms Zero-Day Threat

Kiteworks (formerly Accellion) told customers to shut down on-premises and customer-hosted servers for nine hours after credible threat intelligence from federal authorities warned of possible zero-day attacks. The advisory was lifted on Sunday with no evidence of compromise; the flaw affects Advanced Forms, enabled for fewer than 1% of customers — under 50 organizations.

• Nine-hour precautionary shutdown covered on-premises and customer-hosted instances
• Vulnerability is confined to Advanced Forms, used by under 50 organizations
• No evidence of exploitation; company is working with Mandiant and federal authorities
• Customers are advised to run the latest release, 9.5.1