CVE-2026-77646

Received Received - Intake

Server-Side Request Forgery in PTC Windchill PDMLink and PTC FlexPLM

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: PTC

Description

A Server-Side Request Forgery (SSRF) vulnerability has been reported in PTC Windchill PDMLink 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-2026-77646

EUVD

EUVD-2026-63756

Affected Vendors & Products

Vendor	Product	Version / Range
ptc	windchill_pdmlink	*
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-918	The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Attack-Flow Graph

Executive Summary

This is a Server-Side Request Forgery (SSRF) vulnerability in PTC Windchill PDMLink and PTC FlexPLM. It allows attackers to send crafted requests from the server to internal systems by exploiting untrusted data deserialization.

Impact Analysis

An attacker could exploit this to access internal systems, bypass firewalls, or perform unauthorized actions on behalf of the server. This may lead to data breaches, service disruption, or further network compromise.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR (data protection) and HIPAA (health data privacy). Non-compliance may result in legal penalties, fines, or reputational damage.

Mitigation Strategies

Immediately apply patches or updates provided by PTC for Windchill PDMLink and FlexPLM to address the SSRF vulnerability. Disable unnecessary network services and restrict access to trusted sources only. Monitor network traffic for unusual deserialization requests.

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