CISA KEV: CVE-2026-12569 — PTC Windchill and FlexPLM actively exploited

PTC Windchill and FlexPLM Improper Input Validation Vulnerability. PTC Windchill and FlexPLM contains an improper input validation vulnerability allowing an unauthenticated, remote attacker to execute arbitrary code by sending a malicious request to the network. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see