What products are affected by CVE-2026-12569?

CVE-2026-12569 affects PTC Windchill and FlexPLM. Refer to the vendor advisory and NVD record for affected versions.

Is there a public exploit for CVE-2026-12569?

Yes. Public exploit code or proof-of-concept has been identified for CVE-2026-12569. This lowers the barrier for exploitation and increases the urgency of patching. Organizations should prioritize remediation immediately.

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

CVE-2026-12569 has an EPSS score of 2.3%, placing it in the 81th percentile. This means it has a 2.3% probability of being exploited in the next 30 days, higher than 81% of all known vulnerabilities. EPSS (Exploit Prediction Scoring System) is maintained by FIRST and uses real-world threat data to estimate exploitation likelihood.

Actively Exploited, CISA KEV

CVE-2026-12569: PTC Windchill and FlexPLM Critical Vulnerability

Severity: Critical | CVSS 3.1: 9.8 | Published: 2026-06-18 | KEV Added: 2026-06-25

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

Technical Analysis

Weakness Classification

This vulnerability is classified as CWE-20, Improper Input Validation. The software does not properly validate input, allowing attackers to craft inputs that cause unexpected behavior, data corruption, or code execution.

Attack Vector Breakdown

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Impact Analysis

This vulnerability is exploitable over the network, meaning any system reachable via the internet or internal network is potentially at risk without physical access. The attack complexity is low, requires no special privileges, and needs no user interaction, making it straightforward to exploit at scale. Successful exploitation can result in full confidentiality breach (complete data disclosure), complete integrity compromise (data modification or code execution), total availability loss (denial of service). The software does not properly validate input, allowing attackers to craft inputs that cause unexpected behavior, data corruption, or code execution.

Exploitation Probability (EPSS): 2.3% chance of exploitation in the next 30 days (81th percentile). While the base probability may appear low, inclusion in CISA KEV confirms real-world exploitation is already occurring.

Exploit Availability

Public exploit code or proof-of-concept is available for CVE-2026-12569. This significantly increases the risk of exploitation, as attackers can use or adapt existing exploit code rather than developing their own. A public exploit reference has been identified. Organizations should treat this as an urgent patching priority.

Is CVE-2026-12569 being exploited?

Yes. CVE-2026-12569 is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, restricted to CVEs with confirmed active exploitation in the wild. CISA added this vulnerability on 2026-06-25. Inclusion in KEV triggers the patching mandate under BOD 22-01 for U.S. federal civilian agencies, with a remediation deadline of 2026-06-28. Additionally, public exploit code is available, which lowers the barrier for attackers.

How to fix CVE-2026-12569

Apply the security update issued by PTC for Windchill and FlexPLM. If an immediate patch is not possible, consult the vendor advisory for mitigation guidance, restrict network exposure of the affected service, and monitor logs for indicators of exploitation. CISA's Known Exploited Vulnerabilities catalog requires U.S. federal agencies to remediate this vulnerability by the due date shown below under Binding Operational Directive 22-01. Private organizations should treat KEV entries as priority-one patches because active exploitation has been confirmed in the wild.

Related Vulnerabilities

Other actively exploited vulnerabilities sharing the same weakness pattern (CWE-20, Improper Input Validation):

CVE-2026-34910 (Critical 10.0) [same CWE], A malicious actor with access to the network could exploit an Improper Input…
CVE-2026-6973 (High 7.2) [same CWE], An Improper Input Validation in Ivanti EPMM before versions 12.6.1.1…
CVE-2026-34197 (High 8.8) [same CWE], Improper Input Validation, Improper Control of Generation of Code ('Code…
CVE-2026-32201 (Medium 6.5) [same CWE], Improper input validation in Microsoft Office SharePoint allows an…
CVE-2025-20393 (Critical 10.0) [same CWE], A vulnerability in the Spam Quarantine feature of Cisco AsyncOS Software for…

Frequently asked questions

Is CVE-2026-12569 critical?

CVE-2026-12569 has a CVSS 3.1 base score of 9.8, Critical severity. It should be treated as a priority patch, especially given the active exploitation confirmed by CISA. The availability of public exploit code further increases the urgency.

Is CVE-2026-12569 being actively exploited?

Yes, CISA added CVE-2026-12569 to the Known Exploited Vulnerabilities catalog on 2026-06-25. Inclusion in KEV means CISA has confirmed in-the-wild exploitation. Public exploit code has also been identified, making exploitation accessible to a broader range of threat actors.

How do I patch CVE-2026-12569?

Apply the security update from PTC for Windchill and FlexPLM. Federal agencies must remediate by 2026-06-28 under BOD 22-01.

What type of vulnerability is CVE-2026-12569?

CVE-2026-12569 is classified under CWE-20 (Improper Input Validation). The software does not properly validate input, allowing attackers to craft inputs that cause unexpected behavior, data corruption, or code execution.

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

CVE-2026-12569 has a CVSS 3.1 base score of 9.8, classifying it as Critical severity. The attack vector is Network, attack complexity is Low, and no privileges are required.