Description
A vulnerability exists in System Management Interrupt (SWSMI) handler of InsydeH2O UEFI Firmware code located in SWSMI handler that dereferences gRT (EFI_RUNTIME_SERVICES) pointer to call a GetVariable service, which is located outside of SMRAM. This can result in code execution in SMM (escalating privilege from ring 0 to ring -2).
Published: 2022-02-03
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2020-27107 A vulnerability exists in System Management Interrupt (SWSMI) handler of InsydeH2O UEFI Firmware code located in SWSMI handler that dereferences gRT (EFI_RUNTIME_SERVICES) pointer to call a GetVariable service, which is located outside of SMRAM. This can result in code execution in SMM (escalating privilege from ring 0 to ring -2).
History

Tue, 04 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

Sun, 13 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00185}

epss

{'score': 0.0021}


Subscriptions

Insyde Insydeh2o
Siemens Ruggedcom Ape1808 Ruggedcom Ape1808 Firmware Simatic Field Pg M5 Simatic Field Pg M5 Firmware Simatic Field Pg M6 Simatic Field Pg M6 Firmware Simatic Ipc127e Simatic Ipc127e Firmware Simatic Ipc227g Simatic Ipc227g Firmware Simatic Ipc277g Simatic Ipc277g Firmware Simatic Ipc327g Simatic Ipc327g Firmware Simatic Ipc377g Simatic Ipc377g Firmware Simatic Ipc427e Simatic Ipc427e Firmware Simatic Ipc477e Simatic Ipc477e Firmware Simatic Ipc477e Pro Simatic Ipc477e Pro Firmware Simatic Ipc627e Simatic Ipc627e Firmware Simatic Ipc647e Simatic Ipc647e Firmware Simatic Ipc677e Simatic Ipc677e Firmware Simatic Ipc847e Simatic Ipc847e Firmware Simatic Itp1000 Simatic Itp1000 Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-11-04T19:12:23.190Z

Reserved: 2020-01-06T00:00:00.000Z

Link: CVE-2020-5953

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-02-03T01:15:07.647

Modified: 2025-11-04T20:15:58.837

Link: CVE-2020-5953

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses