# CVE-2026-12569: PTC Windchill and FlexPLM Improper Input Validation Vulnerability

- Exploited (CISA KEV): yes, added 2026-06-25, known ransomware use
- Published: 2026-06-18
- CVSS: 9.3 CRITICAL (v4.0)
- EPSS: 46.0% (99th percentile)
- CWE: CWE-20, CWE-502

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

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | No public claim | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | No public claim | — | — |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

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