PTC Windchill/FlexPLM <11.0 M030 RCE via Deserialization
CVE-2026-12569 Published on June 18, 2026

Remote Code Execution (RCE) vulnerability in Windchill PDMlink
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

Vendor Advisory NVD

Known Exploited Vulnerability

This PTC Windchill and FlexPLM Improper Input Validation Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. 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.

The following remediation steps are recommended / required by June 28, 2026: 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 applicab

Weakness Types

Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

What is a Marshaling, Unmarshaling Vulnerability?

The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.

CVE-2026-12569 has been classified to as a Marshaling, Unmarshaling vulnerability or weakness.


Affected Versions

PTC Windchill PDMLink: PTC FlexPLM:

Exploit Probability

EPSS
0.50%
Percentile
38.74%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.