# CVE-2026-12569 — PTC Windchill PDMLink **CISA KEV** > As of 2026-06-26, CVE-2026-12569 is a CRITICAL-severity vulnerability in PTC Windchill PDMLink, CVSS v3.1 9.8, EPSS 1.1% (61.7th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-06-25), with a US federal remediation deadline of 2026-06-28. Threadlinqs Intelligence links 7 tracked threat campaigns to CVE-2026-12569, most recently “2026 Ransomware Surge Targeting US Organizations: Identity-First Compromise, BYOVD, and Living-Off-the-Cloud Exfiltration (Qilin, Akira, Clop, INC Ransom, Play, DragonForce, Sinobi)”. **Last updated:** 2026-06-26 ## What is CVE-2026-12569? 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 The record classifies CVE-2026-12569 under weakness classes [CWE-20](https://cwe.mitre.org/data/definitions/20.html), [CWE-502](https://cwe.mitre.org/data/definitions/502.html). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. 2 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 87 days ago. ## Severity and exploitation probability - **CVSS v3.1 base score:** 9.8 — CRITICAL (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`) - **CVSS v4.0 base score:** 9.3 (`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`) - **EPSS (FIRST):** 1.1% probability of exploitation in the next 30 days, higher than 61.7% of all scored CVEs - **CISA KEV:** Listed since 2026-06-25, federal remediation deadline 2026-06-28 - **Threadlinqs priority:** 9/10 — CISA KEV-listed, which Threadlinqs floors at 9 - **Published:** 2026-06-18, last modified 2026-06-26 ## Is CVE-2026-12569 being exploited? CISA added CVE-2026-12569 to the Known Exploited Vulnerabilities catalog on 2026-06-25, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2026-06-28 under BOD 22-01. It currently carries a trending score of 53 in the Threadlinqs vulnerability feed. ## Affected products and versions - **PTC**: Windchill PDMLink, FlexPLM ## How to fix CVE-2026-12569 Because CVE-2026-12569 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2026-06-28. No vendor patch reference has been recorded for CVE-2026-12569 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise. ## Threat activity tracking CVE-2026-12569 7 tracked threats in the Threadlinqs corpus reference CVE-2026-12569, either in the campaign’s CVE list or as an indicator on the campaign record. - [2026 Ransomware Surge Targeting US Organizations: Identity-First Compromise, BYOVD, and Living-Off-the-Cloud Exfiltration (Qilin, Akira, Clop, INC Ransom, Play, DragonForce, Sinobi)](https://intel.threadlinqs.com/threat/TL-2026-2125) — HIGH · 2026-08-23 - [CVE-2026-20230: Cisco Unified Communications Manager WebDialer SSRF Actively Exploited to Drop Tor-Routed JSP Webshells via Rogue Apache Axis Service, CISA Sets June 28 Deadline](https://intel.threadlinqs.com/threat/TL-2026-1236) — CRITICAL · 2026-07-11 - [CISA BOD 26-04: Risk-Based Vulnerability Remediation and CISO Reporting Mandate for FCEB Agencies](https://intel.threadlinqs.com/threat/TL-2026-1134) — MEDIUM · 2026-07-06 - [CISA KEV: PTC Windchill RCE and Cisco Unified CM SSRF - Critical Remote Code Execution Vulnerabilities](https://intel.threadlinqs.com/threat/TL-2026-0971) — CRITICAL · 2026-06-28 - [CISA KEV: Cisco Unified Communications Manager SSRF to Webshell (CVE-2026-20230) Actively Exploited](https://intel.threadlinqs.com/threat/TL-2026-0960) — CRITICAL · 2026-06-27 - [CVE-2026-12569: PTC Windchill PDMLink / FlexPLM Unauthenticated Deserialization RCE (CISA KEV, JSP Web Shell Campaign)](https://intel.threadlinqs.com/threat/TL-2026-0954) — CRITICAL · 2026-06-26 - [CISA KEV Adds CVE-2026-12569 (PTC Windchill/FlexPLM Unauthenticated RCE via Deserialization) and CVE-2026-20230 (Cisco Unified CM WebDialer SSRF to Root)](https://intel.threadlinqs.com/threat/TL-2026-1244) — CRITICAL · 2026-06-25 ## Sources Enriched from CVE.org, NVD, FIRST EPSS, CISA KEV, GitHub Security Advisories. Last verified by Threadlinqs on 2026-06-28. This product uses the NVD API but is not endorsed or certified by the NVD. **Vendor advisory and patch** - [ptc.com — vendor advisory](https://www.ptc.com/en/support/article/CS473270) Canonical: https://intel.threadlinqs.com/cve/CVE-2026-12569 Full detection coverage and IOCs for threats exploiting CVE-2026-12569 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp