CVE-2026-77645

Received Received - Intake

Remote Code Execution in PTC Windchill and PTC FlexPLM

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: PTC

Description

A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill and PTC FlexPLM. The vulnerability may be exploited through the deserialization of untrusted data.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-20

Last Modified

2026-08-20

Generated

2026-08-21

AI Q&A

2026-08-21

EPSS Evaluated

N/A

NVD

CVE-2026-77645

EUVD

EUVD-2026-63755

Affected Vendors & Products

Vendor	Product	Version / Range
ptc	windchill	*
ptc	flexplm	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-502	The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Attack-Flow Graph

Executive Summary

This is a critical remote code execution (RCE) vulnerability in PTC Windchill and PTC FlexPLM. It allows attackers to execute arbitrary code remotely by exploiting untrusted data deserialization.

Detection Guidance

Detecting this RCE vulnerability requires monitoring for unusual deserialization activity in PTC Windchill or FlexPLM. Check logs for unexpected network connections or processes spawned by these applications. Use network monitoring tools to inspect traffic patterns for signs of exploitation attempts targeting deserialization flaws.

Impact Analysis

An attacker could gain full control over affected systems, leading to data theft, system damage, or unauthorized access. This could disrupt operations and compromise sensitive information.

Compliance Impact

This vulnerability could lead to data breaches, violating GDPR and HIPAA requirements for data protection. Organizations may face legal penalties and reputational damage.

Mitigation Strategies

Immediately apply vendor patches if available. Isolate affected systems from critical networks. Disable unnecessary services or features in PTC Windchill and FlexPLM. Implement strict input validation for serialized data. Monitor for anomalous activity and restrict user privileges to limit potential impact.

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