CVE entry · CVE-2026-12569
CVE-2026-12569: 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.
- Actively exploited: added to CISA’s KEV catalog on June 25, 2026.
- Used by ransomware, according to CISA.
- Remediation deadline for US federal agencies: June 28, 2026.
Description from CISA’s KEV catalog.
What to do
- Check whether your estate includes PTC Windchill and FlexPLM, including internet-facing devices.
- Apply the vendor’s patch or mitigations (references below). Failing that, isolate the product or stop using it, as CISA requires of US federal agencies.
- An exploited vulnerability has often been used before it was fixed: look for signs of compromise, especially on internet-facing devices.