Risk Letters

Exploited vulnerability

CVE-2026-12569

TLP:CLEAR

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.

Facts

  • Vendor: PTC
  • Product: Windchill and FlexPLM
  • CVSS: 9.3
  • EPSS (probability of exploitation within 30 days): 46 %
  • On CISA's Known Exploited Vulnerabilities list since: 25 June 2026
  • First known exploitation: 25 June 2026
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 28 June 2026
  • Weakness: CWE-20
  • First seen by Risk Letters: 25 June 2026

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD