# CVE-2026-126325: Critical Remote Code Execution (RCE) vulnerability reported in Windchill

Status: published. Published: 2026-11-11. Updated: 2026-11-11.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- PTC / Windchill: 11.0 M030 (affected); 11.1 M020 (affected); 11.2.1.0 (affected); 12.0.2.0 (affected); 12.1.2.0 (affected); 13.0.2.0 (affected); 13.1.0.0 (affected); 13.1.1.0 (affected); 13.1.2.0 (affected); 13.1.3.0 (affected); 13.1.4.0 (affected). Source: CNA: PTC
- PTC / FlexPLM: 11.0 M030 (affected); 11.1 M020 (affected); 11.2.1.0 (affected); 12.0.2.0 (affected); 12.1.2.0 (affected); 13.0.2.0 (affected); 13.1.0.0 (affected); 13.1.1.0 (affected); 13.1.2.0 (affected); 13.1.3.0 (affected). Source: CNA: PTC

## Severity and prioritization

- CVSS 4.0: 9.2 (critical); CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/AU:Y/RE:M/U:Amber; source: CNA: PTC

- CVSS 3.1: 9 (critical); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H; source: CNA: PTC

- CVSS 4.0: 9.2 (critical); CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:M/U:Amber; source: NVD: 0b655efc-079c-4cb9-9e8d-164871239f4e

- CVSS 3.1: 9 (critical); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H; source: NVD: 0b655efc-079c-4cb9-9e8d-164871239f4e

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-20, CWE-502

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.ptc.com/en/support/article/CS483249 (CNA: PTC; vendor-advisory, mitigation, permissions-required)

- https://www.ptc.com/en/support/article/CS483249 (0b655efc-079c-4cb9-9e8d-164871239f4e)

## Provenance

- CNA: PTC: https://www.cve.org/CVERecord?id=CVE-2026-126325; retrieved 2026-11-11; source updated 2026-11-11

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-126325; retrieved 2026-11-11; source updated 2026-11-11

Revision: 4e3c35dc292b638704ece70be1be719ea140be472b67c9b04ab7cb302679416d

Canonical: https://y2.dev/cve/CVE-2026-126325

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