How severe is CVE-2021-27494?

CVE-2021-27494 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-2021-27494 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27494?

CVE-2021-27494 primarily affects Datakit Crosscadware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-27494?

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-2021-27494 published?

CVE-2021-27494 was published on 2021-05-27 and last updated on 2026-06-17.

CVE-2021-27494

CVE-2021-27494 is a high-severity vulnerability in Datakit Crosscadware 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-121.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-121
Affected product: Datakit Crosscadware
Published: 2021-05-27
Last modified: 2026-06-17

Description

Datakit Software libraries CatiaV5_3dRead, CatiaV6_3dRead, Step3dRead, Ug3dReadPsr, Jt3dReadPsr modules in KeyShot Versions v10.1 and prior lack proper validation of user-supplied data when parsing STP files. This could result in a stack-based buffer overflow. An attacker could leverage this vulnerability to execute code in the context of the current process.

Frequently asked questions

What is CVE-2021-27494?: Datakit Software libraries CatiaV5_3dRead, CatiaV6_3dRead, Step3dRead, Ug3dReadPsr, Jt3dReadPsr modules in KeyShot Versions v10.1 and prior lack proper validation of user-supplied data when parsing STP files. This could result in a stack-based buffer overflow. An attacker could leverage this vulnerability to execute code in the context of the current process.
How severe is CVE-2021-27494?: CVE-2021-27494 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-2021-27494 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27494?: CVE-2021-27494 primarily affects Datakit Crosscadware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-27494?: 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-2021-27494 published?: CVE-2021-27494 was published on 2021-05-27 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:datakit:crosscadware:*:*:*:*:*:*:*:*
cpe:2.3:a:luxion:keyshot:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:solid_edge_se2020_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:solid_edge_se2021_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Datakit Crosscadware

CVE-2023-23579 — High (CVSS 7.8): Datakit CrossCadWare_x64.dll contains an out-of-bounds write past the end of an allocated buffer while parsing a…
CVE-2021-27490 — High (CVSS 7.8): Datakit Software libraries CatiaV5_3dRead, CatiaV6_3dRead, Step3dRead, Ug3dReadPsr, Jt3dReadPsr modules in KeyShot…
CVE-2021-27496 — High (CVSS 7.8): Datakit Software libraries CatiaV5_3dRead, CatiaV6_3dRead, Step3dRead, Ug3dReadPsr, Jt3dReadPsr modules in KeyShot…
CVE-2021-27488 — High (CVSS 7.8): Datakit Software libraries CatiaV5_3dRead, CatiaV6_3dRead, Step3dRead, Ug3dReadPsr, Jt3dReadPsr modules in KeyShot…
CVE-2021-27492 — Medium (CVSS 5.5): When opening a specially crafted 3DXML file, the application containing Datakit Software libraries CatiaV5_3dRead,…
CVE-2023-22846 — Low (CVSS 3.3): Datakit CrossCadWare_x64.dll contains an out-of-bounds read past the end of an allocated buffer while parsing a…

All CVEs affecting Datakit Crosscadware →

Other CWE-121 (Stack-based Buffer Overflow) vulnerabilities

CVE-2026-12848 — Critical (CVSS 10.0): GV-I/O Box 4E is a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and…
CVE-2026-12847 — Critical (CVSS 10.0): GV-I/O Box 4E is a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and…
CVE-2026-12846 — Critical (CVSS 10.0): GV-I/O Box 4E is a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and…
CVE-2026-12485 — Critical (CVSS 10.0): GV-I/O Box 4E is a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and…
CVE-2026-37541 — Critical (CVSS 10.0): Buffer overflow vulnerability in Open Vehicle Monitoring System 3 (OVMS3) 3.3.005. In canformat_gvret.cpp, the length…
CVE-2026-42996 — Critical (CVSS 10.0): JS8Call through 2.3.1 and JS8Call-improved before 3.0 have a stack-based buffer overflow via a radio transmission of…

Browse all CWE-121 (Stack-based Buffer Overflow) vulnerabilities →