PTC Windchill and FlexPLM's Improper Input Validation Allows Unauthenticated Remote Attackers to Execute Arbitrary Code via Malicious Network Requests; CISA's June 28th KEV Deadline Has Passed

Last refreshed2026-09-27

Status: KEV | Advisory ID: CVE-2026-12569

Key Details

CVE	CVE-2026-12569
Vulnerability Name	PTC Windchill and FlexPLM Improper Input Validation Vulnerability
Affected products	PTC Windchill and FlexPLM, PTC FlexPLM, and PTC Windchill PDMLink
Exploitation status	Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation.
Classified as	CWE-20 (Improper Input Validation)
KEV listing	Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-06-25.
Exploitation prediction (EPSS)	46.05% probability of exploitation in the next 30 days (99% percentile) -- FIRST.org's EPSS model.
Federal remediation deadline	2026-06-28 (CISA KEV, Binding Operational Directive).

Affected Products, Subsystems & Sectors

Vendor	Product	Affected Versions	Patch Status
PTC	Windchill and FlexPLM
PTC	FlexPLM
PTC	Windchill PDMLink

Vendor

Product

Affected Versions

Patch Status

PTC

Windchill and FlexPLM

PTC

FlexPLM

PTC

Windchill PDMLink

Subsystems	General OT
Sectors	Multiple

What to Know

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.

What to Do

Monitor PTC's web page for any future patch releases.

References

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-12569
CVE	https://www.cve.org/CVERecord?id=CVE-2026-12569

Source

Reference

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-12569

CVE

https://www.cve.org/CVERecord?id=CVE-2026-12569

KEV Required Action

Field	Value
KEV Link	https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Date Added to KEV	2026-06-25
Required Action Due Date	2026-06-28
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.

Field

Value

KEV Link

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

Date Added to KEV

2026-06-25

Required Action Due Date

2026-06-28

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.