TI-2026-04076 Aliases CVE-2026-4681 GHSA-jfrx-fmg3-3p8m

Critical Remote Code Execution vulnerability reported in Windchill

MEDIUM 49CWE-94Published 2026-03-23 · Updated 2026-03-24

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-94.

Summary

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. This issue affects 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; 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00719 54th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
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	—	No fix listed	CNA
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	—	No fix listed	CNA

Windchill PDMLink VendorPTC Affected 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 Fixed in — No fix listed CNA
FlexPLM VendorPTC Affected 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 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-4681
2026-10-03 Alias added: GHSA-jfrx-fmg3-3p8m

References

Advisory 1

https://www.ptc.com/en/about/trust-center/advisory-center/active-advisories/windchill-flexplm-critical-vulnerability?srsltid=AfmBOop3e7Nthx5-BsrjKdpZi50wL6l6Bt21Fz0gUub2cIPgdPGV5bNl

TI-2026-10780 Remote Code Execution (RCE) vulnerability in Windchill PDMlink KEVCVSS 4.0CRITICAL 9.3
TI-2023-00715 Improper array index validation in PTC ThingWorx Edge C-SDK CVSS 3.1CRITICAL 9.8
TI-2022-08956 PTC Axeda agent and Axeda Desktop Server Missing Authentication For Critical Function CVSS 3.1CRITICAL 9.8
TI-2020-16591 Stack-based buffer overflow in PTC Kepware KEPServerEX; ThingWorx Industrial… CVSS 3.1CRITICAL 9.8
TI-2022-02619 Stack-based buffer overflow in Kepware KEPServerEX CVSS 3.1CRITICAL 9.8
TI-2023-00714 Integer overflow in PTC ThingWorx Edge C-SDK CVSS 3.1CRITICAL 9.8

See all 43 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences