Vulnerability Details CVE-2020-27339
In the kernel in Insyde InsydeH2O 5.x, certain SMM drivers did not correctly validate the CommBuffer and CommBufferSize parameters, allowing callers to corrupt either the firmware or the OS memory. The fixed versions for this issue in the AhciBusDxe, IdeBusDxe, NvmExpressDxe, SdHostDriverDxe, and SdMmcDeviceDxe drivers are 05.16.25, 05.26.25, 05.35.25, 05.43.25, and 05.51.25 (for Kernel 5.1 through 5.5).
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 15.2%
CVSS Severity
CVSS v3 Score 6.7
CVSS v2 Score 7.2
Products affected by CVE-2020-27339
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cpe:2.3:h:siemens:ruggedcom_apr1808:-
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cpe:2.3:h:siemens:simatic_field_pg_m5:-
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cpe:2.3:h:siemens:simatic_field_pg_m6:-
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cpe:2.3:h:siemens:simatic_ipc127e:-
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cpe:2.3:h:siemens:simatic_ipc227g:-
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cpe:2.3:h:siemens:simatic_ipc277g:-
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cpe:2.3:h:siemens:simatic_ipc327g:-
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cpe:2.3:h:siemens:simatic_ipc377g:-
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cpe:2.3:h:siemens:simatic_ipc427e:-
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cpe:2.3:h:siemens:simatic_ipc477e:-
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cpe:2.3:h:siemens:simatic_ipc477e_pro:-
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cpe:2.3:h:siemens:simatic_ipc627e:-
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cpe:2.3:h:siemens:simatic_ipc647e:-
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cpe:2.3:h:siemens:simatic_ipc677e:-
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cpe:2.3:h:siemens:simatic_ipc847e:-
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cpe:2.3:h:siemens:simatic_itp1000:-
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cpe:2.3:o:insyde:insydeh2o:*
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cpe:2.3:o:siemens:ruggedcom_apr1808_firmware:-
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cpe:2.3:o:siemens:simatic_field_pg_m5_firmware:-
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cpe:2.3:o:siemens:simatic_field_pg_m6_firmware:-
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cpe:2.3:o:siemens:simatic_ipc127e_firmware:-
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cpe:2.3:o:siemens:simatic_ipc227g_firmware:-
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cpe:2.3:o:siemens:simatic_ipc277g_firmware:-
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cpe:2.3:o:siemens:simatic_ipc327g_firmware:-
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cpe:2.3:o:siemens:simatic_ipc377g_firmware:-
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cpe:2.3:o:siemens:simatic_ipc427e_firmware:-
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cpe:2.3:o:siemens:simatic_ipc477e_firmware:-
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cpe:2.3:o:siemens:simatic_ipc477e_pro_firmware:-
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cpe:2.3:o:siemens:simatic_ipc627e_firmware:-
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cpe:2.3:o:siemens:simatic_ipc647e_firmware:-
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cpe:2.3:o:siemens:simatic_ipc677e_firmware:-
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cpe:2.3:o:siemens:simatic_ipc847e_firmware:-
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cpe:2.3:o:siemens:simatic_itp1000_firmware:-