CVE-2026-12569
PTC Windchill and FlexPLM Improper Input Validation Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 28 June 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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
- CVSS 4.0
- 9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 46.05% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 25 June 2026 · due 28 June 2026 · used in ransomware campaigns
- Weakness
- CWE-20, CWE-502
- Affected
- ptc/flexplm · ptc/windchill pdmlink
- Source
- 0b655efc-079c-4cb9-9e8d-164871239f4e
EPSS moved from 46.0% on 24 September 2026 to 46.0% on 30 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
CISA notes
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. https://www.ptc.com/en/support/article/CS473270 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-12569
References
- https://www.ptc.com/en/support/article/CS473270Permissions Required
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-12569US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.