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TI-2021-18545 Aliases CVE-2021-42024GHSA-m55v-8766-rh84

Out-of-bounds write in Siemens Simcenter STAR-CCM+ Viewer

Priority LOW 36CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

A vulnerability has been identified in Simcenter STAR-CCM+ Viewer (All versions < 2021.3.1). The starview+.exe application lacks proper validation of user-supplied data when parsing scene files. This could result in an out of bounds write past the end of an allocated structure. An attacker could leverage this vulnerability to execute code in the context of the current process.

Why it matters now

EPSS 0.0084 58th percentileScored 2026-11-07
Fix Fixed Simcenter STAR-CCM+ Viewer (Siemens): 2021.3.1

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
SiemensSimcenter STAR-CCM+ Viewerbefore 2021.3.12021.3.1Patch availableCNA
  • Simcenter STAR-CCM+ Viewer VendorSiemens Affected before 2021.3.1 Fixed in 2021.3.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:siemens:simcenter_star-ccm\+_viewer:*:*:*:*:*:*:*:*before 2021.3.1VulnerableSiemens
  • cpe:2.3:a:siemens:simcenter_star-ccm\+_viewer:*:*:*:*:*:*:*:* Versions before 2021.3.1 Vulnerable ·Siemens

Remediation

  • Fix · CNA Simcenter STAR-CCM+ Viewer (Siemens) Fixed in 2021.3.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-42024
  2. 2026-10-03 Alias added: GHSA-m55v-8766-rh84

References

Patch 1

  • TI-2022-08480 Memory corruption in Siemens Simcenter STAR-CCM+ Viewer CVSS 3.1HIGH 7.8
  • TI-2022-15478 Information disclosure in Siemens Simcenter STAR-CCM+ CVSS 4.0MEDIUM 6.9
  • TI-2025-27213 Improper certificate validation in Siemens Software Center CVSS 4.0MEDIUM 6.3

Sources

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