CVEs / CVE-2026-12569
CVE-2026-12569: PTC Windchill and FlexPLM Improper Input Validation Vulnerability
- Known exploited in the CISA KEV catalog since 25 Jun 2026
- critical 9.8 CVSS 3.1 (NVD)
- EPSS 46% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
- Last changed at its sources
Are you affected? Check your servers with Stackurity: it lists the software on each server and the vulnerabilities to fix first.
Check your servers with Stackurity Already using Stackurity? Search for CVE-2026-12569
Summary
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.
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
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| PTC Windchill PDMLink | up to and including 11.0 M030 | — |
| PTC Windchill PDMLink | 11.1 M020 | — |
| PTC Windchill PDMLink | 11.2.1.0 | — |
| PTC Windchill PDMLink | 12.0.2.0 | — |
| PTC Windchill PDMLink | 12.1.2.0 | — |
| PTC Windchill PDMLink | 13.0.2.0 | — |
| PTC Windchill PDMLink | 13.1.0.0 | — |
| PTC Windchill PDMLink | 13.1.1.0 | — |
| PTC Windchill PDMLink | 13.1.2.0 | — |
| PTC Windchill PDMLink | 13.1.3.0 | — |
| PTC FlexPLM | up to and including 11.0 M030 | — |
| PTC FlexPLM | 11.1 M020 | — |
| PTC FlexPLM | 11.2.1.0 | — |
| PTC FlexPLM | 12.0.0.0 | — |
| PTC FlexPLM | 12.0.2.0 | — |
| PTC FlexPLM | 12.1.2.0 | — |
| PTC FlexPLM | 12.1.3.0 | — |
| PTC FlexPLM | 13.0.2.0 | — |
| PTC FlexPLM | 13.0.3.0 | — |
Exploitation
| In CISA KEV since | 25 Jun 2026 |
|---|---|
| Due date for US federal agencies | 28 Jun 2026 |
| Used in ransomware campaigns | Known |
| 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. |
Severity
| CVSS 3.1 | 9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-20, CWE-502 |
References
- CVE-2026-12569 on NVD
- CVE-2026-12569 in the CISA KEV catalog
- https://www.ptc.com/en/support/article/CS473270 (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk (cited by CISA)
- https://www.ptc.com/en/support/article/CS473270 Permissions Required
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-12569 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.