How severe is CVE-2026-12569?

No CVSS score has been assigned to CVE-2026-12569 yet. Review the advisory details and affected package list to assess your exposure.

Which products are affected by CVE-2026-12569?

CVE-2026-12569 affects the following products: PTC Windchill PDMLink, PTC FlexPLM.

How do I patch CVE-2026-12569?

The records we use list no fixed version for CVE-2026-12569 (versions up to 11.0 M030 are affected). Check the PTC Windchill PDMLink advisory for a patched release, and apply the workarounds below until you can upgrade.

How do I detect CVE-2026-12569 across my infrastructure?

Inventory every PTC Windchill PDMLink deployment and check each version against the affected-products list above.

How do I mitigate CVE-2026-12569 if there is no patch (or I can't update yet)?

Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Is CVE-2026-12569 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-12569 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-12569?

CVE-2026-12569 has an EPSS (Exploit Prediction Scoring System) score of 46.0%, placing it in the 99th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score warrants monitoring and prompt remediation.

Is CVE-2026-12569 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2026-12569 (PTC Windchill and FlexPLM Improper Input Validation Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-06-25. CISA required all US federal civilian agencies to remediate this vulnerability by 2026-06-28. The required action was: 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. This CVE has been used in known ransomware campaigns. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2026-12569?

CVE-2026-12569 is classified as Improper Input Validation (CWE-20), Deserialization of Untrusted Data (CWE-502). These weakness types describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

Which products and versions are affected by CVE-2026-12569?

CVE-2026-12569 affects PTC Windchill PDMLink (10 versions, e.g. 0, 11.1 M020, 11.2.1.0…); PTC FlexPLM (9 versions, e.g. 0, 11.1 M020, 11.2.1.0…). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2026-12569 published, and has it been updated?

CVE-2026-12569 was published on June 18, 2026 and was last updated on August 1, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV · ACTIVELY EXPLOITED

CVE-2026-12569 — Windchill PDMLink

CVE-2026-12569 is a Improper Input Validation vulnerability in PTC Windchill PDMLink. It is in CISA's Known Exploited Vulnerabilities catalog (added 2026-06-25) and has been used in ransomware campaigns — treat it as actively exploited and patch now. Versions up to 11.0 M030 are affected; the records list no fixed version yet, so check the vendor advisory below.

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…

Published

Jun 18, 2026

Updated

Aug 1, 2026

Affected

2 products

Patched

See advisory

Exploits

None indexed

Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2026-06-25 — including use in ransomware campaigns. Federal agencies were required to remediate by 2026-06-28.
CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2026-12569.

EPSS Exploitation Probability

via FIRST.org ↗

46.0%probability of exploitation in next 30 days

High Risk0.00%

Lower risk than most CVEs99th percentile — riskier than 99% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

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

Affected Products

2 products · 2 configurations

Application

Windchill PDMLinkPTC

≤ 11.0 M030

10 versions

011.1 M02011.2.1.012.0.2.012.1.2.013.0.2.013.1.0.013.1.1.013.1.2.013.1.3.0

Application

FlexPLMPTC

≤ 11.0 M030

9 versions

011.1 M02011.2.1.012.0.0.012.0.2.012.1.2.012.1.3.013.0.2.013.0.3.0

Detection & mitigation playbook

Vendor / appliance

Detect
Inventory every PTC Windchill PDMLink deployment and check each version against the affected-products list above.
Remediation status
The records we use list no fixed version for CVE-2026-12569 (versions up to 11.0 M030 are affected). Check the PTC Windchill PDMLink advisory for a patched release, and apply the workarounds below until you can upgrade.
Mitigate without a patch
Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Frequently Asked Questions

O3 Security · Runtime Protection

Is CVE-2026-12569 being exploited in your environment?

Detect and block the exploit chain at execution, on systems you cannot patch yet.

Protect my workloads How runtime protection works