CVE-2025-4277 - Vulnerability Details - OpenCVE

Tcg2Smm has a vulnerability which can be used to write arbitrary memory inside SMRAM and execute arbitrary code at SMM level.

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required High

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00026.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Insyde	Insydeh2o

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products
Insyde	Insydeh2o

Advisories

Source	ID	Title
EUVD	EUVD-2025-24532	Tcg2Smm has a vulnerability which can be used to write arbitrary memory inside SMRAM and execute arbitrary code at SMM level.

Fixes

Solution

Kernel 5.2, Version 05.2A.21 Kernel 5.3, Version 05.39.21 Kernel 5.4, Version 05.47.21 Kernel 5.5, Version 05.55.21 Kernel 5.6, Version 05.62.21 Kernel 5.7, Version 05.71.21

Workaround

No workaround given by the vendor.

References

Link	Providers
https://www.insyde.com/security-pledge/sa-2025005/

History

Thu, 14 Aug 2025 06:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Insyde Insyde insydeh2o
Vendors & Products		Insyde Insyde insydeh2o

Wed, 13 Aug 2025 14:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Wed, 13 Aug 2025 02:00:00 +0000

Type	Values Removed	Values Added
Description		Tcg2Smm has a vulnerability which can be used to write arbitrary memory inside SMRAM and execute arbitrary code at SMM level.
Title		Tcg2Smm: improper input validation may lead to arbitrary code execution
Weaknesses		CWE-20
References		https://www.insyde.com/security-pledge/sa-2025005/
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H'}`

MITRE

Status: PUBLISHED

Assigner: Insyde

Published: 2025-08-13T01:46:22.998Z

Updated: 2025-08-14T05:54:24.230Z

Reserved: 2025-05-05T02:10:48.657Z

Link: CVE-2025-4277

Vulnrichment

Updated: 2025-08-13T13:21:50.279Z

NVD

Status : Awaiting Analysis

Published: 2025-08-13T02:15:26.690

Modified: 2025-08-13T17:33:46.673

Link: CVE-2025-4277

Redhat

No data.

OpenCVE Enrichment

Updated: 2025-08-13T21:47:03Z

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