CVE-2021-25665

Name: CVE-2021-25665
Creator: NVD / NIST
Published: 2021-09-14T11:15:22.023+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.29%

Last modified Jun 17, 2026

CVE-2021-25665 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 1.29% chance of exploitation in the next 30 days.

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)

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

1.29%

66.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Siemens	Simcenter Star-Ccm\+	< 2021.2.1

References

https://cert-portal.siemens.com/productcert/pdf/ssa-109294.pdfPatch, Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1074/Third Party Advisory, VDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-109294.pdfPatch, Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1074/Third Party Advisory, VDB Entry

Timeline

Published: Sep 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-25665?

How severe is CVE-2021-25665?

CVE-2021-25665 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.29% probability of exploitation in the next 30 days.

How do I fix CVE-2021-25665?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-25665?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST