Key Findings CISA and BSI issued critical warning for CVE-2026-4681 affecting PTC Windchill and FlexPLM with CVSS score of 10.0 No patches available at time of advisory; exploitation could be imminent according to German media reports Remote Code Execution vulnerability exploitable through deserialization of untrusted data German police conducted unprecedented physical visits to companies to warn administrators, some at 3:30 AM PTC released indicators of compromise despite st