CVE-2021-42024
CVE-2021-42024 is a high-severity vulnerability in Siemens Simcenter Star-ccm+ Viewer with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 6.8
- EPSS exploit prediction: 1% (53rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Siemens Simcenter Star-ccm+ Viewer
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2021-42024?
- 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.
- How severe is CVE-2021-42024?
- CVE-2021-42024 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-42024 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-42024?
- CVE-2021-42024 affects Siemens Simcenter Star-ccm+ Viewer. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-42024?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-42024 published?
- CVE-2021-42024 was published on 2021-12-14 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:siemens:simcenter_star-ccm\+_viewer:*:*:*:*:*:*:*:*
More vulnerabilities in Siemens Simcenter Star-ccm+ Viewer
- CVE-2022-24661 — High (CVSS 7.8): A vulnerability has been identified in Simcenter STAR-CCM+ Viewer (All versions < V2022.1). The starview+.exe contains…
- CVE-2022-34659 — High (CVSS 7.5): A vulnerability has been identified in Simcenter STAR-CCM+ (All versions only if the Power-on-Demand public license…
- CVE-2025-40745 — Low (CVSS 3.7): A vulnerability has been identified in Siemens Software Center (All versions < V3.5.8.2), Simcenter 3D (All versions <…
All CVEs affecting Siemens Simcenter Star-ccm+ Viewer →
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