Security Digest · Vulnerability record · Known exploited
CVE-2026-12569: PTC Windchill and FlexPLM Improper Input Validation Vulnerability
Exploited in the wild (CISA KEV). A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill PDMlink and PTC FlexPLM.
CISA KEV · added 2026-06-25 CVSS 9.3 Critical EPSS 46.0% · p99
Should you act?
Exploited: patch now if you run it
CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- Yes, if you run PTC Windchill and FlexPLM. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2026-06-25, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2026-06-28; treat that as the outer limit, not the target. CISA also lists it as known to be used in ransomware campaigns.
- EPSS 46.0%, percentile 99: FIRST’s model estimates a 46.0% chance of exploitation activity in the next 30 days, higher than 99% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
What it is
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
CISA’s 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.
Weakness type: CWE-20, CWE-502.
Product: PTC Windchill and FlexPLM · Assigned by: PTC · Published: 2026-06-18
Affected and fixed versions
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| PTC | Windchill PDMLink | <= 11.0 M030, 11.1 M020, 11.2.1.0, 12.0.2.0, 12.1.2.0, 13.0.2.0, 13.1.0.0, 13.1.1.0, 13.1.2.0, 13.1.3.0 |
| PTC | FlexPLM | <= 11.0 M030, 11.1 M020, 11.2.1.0, 12.0.0.0, 12.0.2.0, 12.1.2.0, 12.1.3.0, 13.0.2.0, 13.0.3.0 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| PTC | 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/AU:Y/R:U/V:C/U:Red |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Attack requirements: none
- Privileges required: none (no login)
- User interaction: none
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: added 2026-06-25; federal due date 2026-06-28. Known ransomware use: Known.
- CISA 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.
- CISA SSVC assessment: exploitation active, automatable yes, technical impact total.
- FIRST EPSS (model of 2026-10-21): 46.05% probability of exploitation activity in the next 30 days; percentile 99.
Timeline
- — CVE record published by PTC
- — Added to CISA’s Known Exploited Vulnerabilities catalog
- — CISA remediation deadline for US federal agencies
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vendor and project advisories, patches
- ptc.com ptc.com
Vulnerability records
- CVE.org record CVE-2026-12569 cve.org
- NVD entry CVE-2026-12569 nvd.nist.gov