# CVE-2026-126325: PTC Windchill and FlexPLM remote code execution via deserialization

Source: https://junglewise.ai/threats/cve-2026-126325-a-critical-remote-code-execution-rce-vulnerability-has-been  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-11. Updated: 2026-11-11  
License: CC BY 4.0 with a link back

CVE-2026-126325 · Severity: critical · CVSS 9 · Published 2026-11-11

PTC Windchill and FlexPLM are product lifecycle management systems used by enterprises to manage complex product designs and manufacturing processes. A critical vulnerability in how these systems process untrusted data could allow a network attacker to execute arbitrary code and gain complete control over the affected systems, leading to data theft, system compromise, or operational disruption.

Technologies: [PTC FlexPLM](https://junglewise.ai/threats/technologies/flexplm), [PTC Windchill](https://junglewise.ai/threats/technologies/windchill). Vendors: [PTC](https://junglewise.ai/threats/vendors/ptc).

## Quick answers

**Is CVE-2026-126325 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-126325 being exploited in the wild.

**How severe is CVE-2026-126325?** Critical severity, with a CVSS score of 9, published 11 November 2026.

**Which products and versions are affected?** PTC Windchill; PTC FlexPLM.

**Is there a fix for CVE-2026-126325?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-126325 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-126325?** Check whether you run PTC FlexPLM or PTC Windchill. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability exists in the deserialization of untrusted data in PTC Windchill and PTC FlexPLM. An attacker can exploit this flaw through the network to achieve remote code execution by crafting malicious serialized objects. No authentication or user interaction is required to trigger the vulnerability.

## Affected products

- PTC Windchill
- PTC FlexPLM

## Timeline

- 2026-11-11: disclosed

## References

- [https://www.ptc.com/en/support/article/CS483249](https://www.ptc.com/en/support/article/CS483249)

## Related threats

- [PTC Windchill PDMLink server-side request forgery via deserialization](https://junglewise.ai/threats/cve-2026-77646-ptc-windchill-pdmlink-server-side-request-forgery-via)
- [PTC Windchill deserialization remote code execution](https://junglewise.ai/threats/cve-2026-77645-ptc-windchill-deserialization-remote-code-execution)
- [PTC Windchill and FlexPLM remote code execution via deserialization](https://junglewise.ai/threats/cve-2026-12569-ptc-windchill-and-flexplm-remote-code-execution-via)