CISA Advises Immediate Patch for Actively Exploited SolarWinds Serv-U Flaw

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued a directive for federal agencies to patch a critical denial-of-service vulnerability in SolarWinds Serv-U. This flaw is currently being actively exploited by attackers, allowing them to crash the service remotely without authentication. Agencies are mandated to apply the necessary mitigations by June 19, 2026, to prevent potential disruptions.