Insyde H2O up to 05.71.17 UsbCoreDxe input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Insyde H2O up to 05.39.17/05.47.17/05.55.17/05.62.17/05.71.17. Affected by this vulnerability is an unknown functionality of the component UsbCoreDxe. Executing a manipulation can lead to input validation. This vulnerability appears as CVE-2025-4276. The attack requires local access. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Insyde H2O up to 05.39.17/05.47.17/05.55.17/05.62.17/05.71.17. It has been declared as critical. This vulnerability affects an unknown function of the component UsbCoreDxe. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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

The advisory is available at insyde.com. This vulnerability was named CVE-2025-4276 since 05/05/2025. The exploitation appears to be difficult. Local access is required to approach this attack. Additional levels of successful authentication are necessary for exploitation. The technical details are unknown and an exploit is not available.

Upgrading to version 05.39.18, 05.47.18, 05.55.18, 05.62.18 or 05.71.18 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-24533). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 6.4
VulDB Temp Score: 6.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (Insyde): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: H2O 05.39.18/05.47.18/05.55.18/05.62.18/05.71.18

Timelineinfo

05/05/2025 CVE reserved
08/13/2025 +100 days Advisory disclosed
08/13/2025 +0 days VulDB entry created
08/13/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: insyde.com
Status: Confirmed

CVE: CVE-2025-4276 (🔒)
GCVE (CVE): GCVE-0-2025-4276
GCVE (VulDB): GCVE-100-319858
EUVD: 🔒

Entryinfo

Created: 08/13/2025 07:30
Updated: 08/13/2025 16:42
Changes: 08/13/2025 07:30 (63), 08/13/2025 16:42 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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