Vulnerability-Lookup

CVE-2026-77645 (GCVE-0-2026-77645)

Vulnerability from cvelistv5 – Published: 2026-08-20 22:08 – Updated: 2026-08-22 03:55

Title

Critical Remote Code Execution (RCE) vulnerability reported in Windchill

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.

Severity

9.2 (Critical)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/AU:Y/R:U/V:C/RE:M/U:Red

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-21 00:00 UTC

CWE

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

Assigner

PTC icscert root

References

1 reference

URL	Tags
https://www.ptc.com/en/support/article/CS474826	vendor-advisorymitigationpermissions-required

Impacted products

2 products

Vendor	Product	Version	CPE status
PTC	Windchill PDMLink	Affected: 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	guessed
PTC	FlexPLM	Affected: 11.0 M030 Affected: 11.1 M020 Affected: 11.2.1.0 Affected: 12.0.0.0 Affected: 12.0.2.0 Affected: 12.0.3.0 Affected: 12.1.2.0 Affected: 12.1.3.0 Affected: 13.0.2.0 Affected: 13.0.3.0	guessed

Credits

Arthur Aires (https://arthurair.es/) brenocss (LinkedIn: @brenocss) Bruno Milreu (LinkedIn: @bruno-milreu)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-77645

Vulnerability from fkie_nvd - Published: 2026-08-20 22:18 - Updated: 2026-09-09 15:52

Severity

9.2 (Critical) - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/AU:Y/R:U/V:C/RE:M/U:Red

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.

References

	URL	Tags
	0b655efc-079c-4cb9-9e8d-164871239f4e	https://www.ptc.com/en/support/article/CS474826

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "RED",
          "subAvailabilityImpact": "LOW",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "NONE",
          "valueDensity": "CONCENTRATED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/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:U/V:C/RE:M/U:Red",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "MODERATE"
        },
        "source": "0b655efc-079c-4cb9-9e8d-164871239f4e",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-77645",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-21T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-20T22:18:06.510",
  "references": [
    {
      "source": "0b655efc-079c-4cb9-9e8d-164871239f4e",
      "url": "https://www.ptc.com/en/support/article/CS474826"
    }
  ],
  "sourceIdentifier": "0b655efc-079c-4cb9-9e8d-164871239f4e",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "0b655efc-079c-4cb9-9e8d-164871239f4e",
      "type": "Secondary"
    }
  ]
}

GHSA-QXMV-9Q88-WWMW

Vulnerability from github – Published: 2026-08-21 00:31 – Updated: 2026-08-21 00:31

Details

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.

Severity

9.2 (Critical)


                  
                    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/AU:Y/R:U/V:C/RE:M/U:Red

Show details on source website

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To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-77645"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-20T22:18:06Z",
    "severity": "CRITICAL"
  },
  "details": "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.",
  "id": "GHSA-qxmv-9q88-wwmw",
  "modified": "2026-08-21T00:31:24Z",
  "published": "2026-08-21T00:31:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77645"
    },
    {
      "type": "WEB",
      "url": "https://www.ptc.com/en/support/article/CS474826"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/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:U/V:C/RE:M/U:Red",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-77645 (GCVE-0-2026-77645)

FKIE_CVE-2026-77645

GHSA-QXMV-9Q88-WWMW

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Sightings

Nomenclature

Related by attack behaviour