June 25, 2026 · Applied Cybernetics Group
CVE-2026-12569 — PTC Windchill and FlexPLM
known ransomware use
PTC Windchill and FlexPLM Improper Input Validation Vulnerability
- Added to KEV
2026-06-25- Federal due date
2026-06-28- Vendor
- PTC
- Product
- Windchill and FlexPLM
- EPSS
- 98.6th percentile (score 0.406, as of
2026-09-16) - NVD CVSS v3.1
- 9.8 (CRITICAL)
- Ransomware use
- Known
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2026-12569
CISA short description
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 URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
NVD description
A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill PDMlink and PTC FlexPLM. The vulnerability may be exploited through the deserialization of untrusted data. * This advisory also applies to all CPS versions * The identified vulnerability also impacts Windchill and FlexPLM releases prior to 11.0 M030