Input validation error in Windchill and FlexPLM - CVE-2026-12569
Published: June 30, 2026
Vulnerability identifier: #VU135916
CSH Severity: Critical
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red
CVE-ID: CVE-2026-12569
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: PTC
Affected software:
Windchill
FlexPLM
Windchill
FlexPLM
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to an insufficient issue. A remote non-authenticated attacker can send a specially crafted HTTP POST request to the "Windchill/login/*.jsp" endpoint and execute arbitrary code on the system.
Note, the vulnerability is being actively exploited in the wild.
How to mitigate CVE-2026-12569
The vendor has address this vulnerability by releasing a security patch for multiple branches of their software.