9.8

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

CVSS: 9.8v3.1CriticalKEVRansomwareAnalyzed
Published 18-06-2026Last modified 01-08-2026
Open JSON

Vulnerability summary

CVE-2026-12569 is a critical (CVSS 9.8) Improper Input Validation vulnerability in PTC Windchill and FlexPLM. It is known to be exploited: CISA and ENISA list it, first on 25-06-2026. It has been used in ransomware campaigns. EPSS estimates a 46.05% chance of exploitation in the next 30 days, higher than 98.8% of scored vulnerabilities.

Overall risk
90/100
0100
Critical · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
46.05%
0%100%
High · +5.46 pp in 30 days
KEVListedCISA · ENISA
RansomwareKnown useFlagged by CISA, ENISA
Public exploits0No public exploits recorded

Timeline

  1. 18-06-2026
    PublishedVulnerability first disclosed.
  2. 25-06-2026
    Added to CISA KEVPTC Windchill and FlexPLM Improper Input Validation Vulnerability
  3. 28-06-2026
    CISA remediation dueApply mitigations per vendor instructions.
  4. 01-08-2026
    Last modifiedVulnerability information updated.
  5. 16-08-2026
    Added to ENISA KEVAdded to the ENISA known exploited vulnerabilities catalog.

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 metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

46.05%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

+5.46 pp

From 40.59% on 21-09-2026

21-09-202621-10-2026
EPSS score
46.05%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
25-06-2026
Federal due date
28-06-2026
Ransomware
ENISA CNWListed
Added
16-08-2026
Ransomware

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. www.ptc.com/en/support/article/CS473270 nvd.nist.gov/vuln/detail/CVE-2026-12569

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ptc2 products
  • flexplm≤ 11.0 M030 | 11.1 M020 | 12.1.2.0 | ≤ 11.0m030 | 11.1m020 | 11.2.1.0 | 12.0.0.0 | 12.0.2.0 | 12.1.3.0 | 13.0.2.0 | 13.0.3.0
  • windchill_pdmlink≤ 11.0 M030 | 11.1 M020 | < 11.0m030 | 11.0m030 | 11.1m020 | 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

1 vendor · 2 products

References

2 links