Exploited vulnerability · CISA KEV

Is CVE-2026-12569 exploited? Yes: in CISA KEV since 25 Jun 2026

Gociux · PTC Windchill and FlexPLM · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2026-12569, PTC Windchill and FlexPLM Improper Input Validation Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 25 Jun 2026, 7 days after it was published. It is known to be used in ransomware campaigns. It affects PTC Windchill and FlexPLM. If you run it, CISA's required action is: 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.

What it is

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

1. Check whether you run it. Look for Windchill and FlexPLM in your asset inventory, including appliances and cloud images. Stack check lists every exploited PTC CVE at once.
2. Apply the fix. 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.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 18 Jun 2026.
4. Get told next time. Email alerts when CISA adds a CVE for PTC.

References

• www.ptc.com/en/support/article/CS473270
• nvd.nist.gov/vuln/detail/CVE-2026-12569

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in June 2026 · act-now radar.