Critical RCE Flaw in PTC Windchill and FlexPLM Puts Product Data at Risk

**PTC advisory — CVE-2026-4681 (CVSS 10):** a critical remote-code-execution vulnerability via deserialization affects Windchill and FlexPLM across many modern releases; PTC warns impacted versions (prior to 11.0 M030 and multiple CPS lines) and urges customers to audit environments and apply critical patches immediately to prevent full system compromise and data exfiltration.