CVE-2026-77645

Critical

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.

SeverityCritical

CVSS9.2

Exploit probability—

ProductWindchill PDMLink

PublishedAug 20, 2026

First seenAug 20, 2026

Weakness typeCWE-20Improper input validation CWE-502Deserialization of untrusted data

How to fix

Vendor advisories

ptc.com/en/support/article/CS474826

Affected products

Product	Affected versions	Fixed in
PTC Windchill PDMLink	11.0 M030, 11.1 M020, 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	—
PTC FlexPLM	11.0 M030, 11.1 M020, 11.2.1.0, 12.0.0.0, 12.0.2.0, 12.0.3.0, 12.1.2.0, 12.1.3.0, 13.0.2.0, 13.0.3.0	—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.