CVE-2021-25665

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-09-14 · updated 2026-06-17
Weakness: CWE-787

Description

A vulnerability has been identified in Simcenter STAR-CCM+ Viewer (All versions < V2021.2.1). 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. (ZDI-CAN-13700)

Affected products

Siemens Simcenter STAR-CCM+: before 2021.2.1 — fixed in 2021.2.1

How to fix

Upgrade to a fixed version: Siemens Simcenter STAR-CCM+ 2021.2.1. Check the vendor advisory for mitigations.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-109294.pdf
https://www.zerodayinitiative.com/advisories/ZDI-21-1074/
https://cert-portal.siemens.com/productcert/pdf/ssa-109294.pdf
https://www.zerodayinitiative.com/advisories/ZDI-21-1074/

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