How severe is CVE-2021-46158?

CVE-2021-46158 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-2021-46158 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46158?

CVE-2021-46158 primarily affects Siemens Simcenter Femap. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-46158?

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-2021-46158 published?

CVE-2021-46158 was published on 2022-02-09 and last updated on 2026-06-17.

CVE-2021-46158

CVE-2021-46158 is a high-severity vulnerability in Siemens Simcenter Femap 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-1284.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1284
Affected product: Siemens Simcenter Femap
Published: 2022-02-09
Last modified: 2026-06-17

Description

A vulnerability has been identified in Simcenter Femap V2020.2 (All versions), Simcenter Femap V2021.1 (All versions). Affected application contains a stack based buffer overflow vulnerability while parsing NEU files. This could allow an attacker to execute code in the context of the current process. (ZDI-CAN-15085, ZDI-CAN-15289, ZDI-CAN-15602)

Frequently asked questions

What is CVE-2021-46158?: A vulnerability has been identified in Simcenter Femap V2020.2 (All versions), Simcenter Femap V2021.1 (All versions). Affected application contains a stack based buffer overflow vulnerability while parsing NEU files. This could allow an attacker to execute code in the context of the current process. (ZDI-CAN-15085, ZDI-CAN-15289, ZDI-CAN-15602)
How severe is CVE-2021-46158?: CVE-2021-46158 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-2021-46158 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46158?: CVE-2021-46158 primarily affects Siemens Simcenter Femap. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-46158?: 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-2021-46158 published?: CVE-2021-46158 was published on 2022-02-09 and last updated on 2026-06-17.

References

Affected products (8)

cpe:2.3:a:siemens:simcenter_femap:2020.2:-:*:*:*:*:*:*
cpe:2.3:a:siemens:simcenter_femap:2020.2:maintenance_pack1:*:*:*:*:*:*
cpe:2.3:a:siemens:simcenter_femap:2020.2:maintenance_pack2:*:*:*:*:*:*
cpe:2.3:a:siemens:simcenter_femap:2020.2:maintenance_pack3:*:*:*:*:*:*
cpe:2.3:a:siemens:simcenter_femap:2021.1:-:*:*:*:*:*:*
cpe:2.3:a:siemens:simcenter_femap:2021.1:maintenance_pack1:*:*:*:*:*:*
cpe:2.3:a:siemens:simcenter_femap:2021.1:maintenance_pack2:*:*:*:*:*:*
cpe:2.3:a:siemens:simcenter_femap:2021.1:maintenance_pack3:*:*:*:*:*:*

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