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CVE-2026-77645

PTC Windchill PDMLink, FlexPLM

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.

CVSS
9.2
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.08.21
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 9.2

Vulnerability overview

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.

Affected product and versions

Product
PTC Windchill PDMLink, FlexPLM
Affected versions
>= 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, >= 12.0.0.0, >= 12.0.3.0, >= 12.1.3.0, >= 13.0.3.0
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that PTC Windchill PDMLink, FlexPLM and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
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
CWE
CWE-20, CWE-502