Insyde InsydeH2O up to 5.5 FvbServicesRuntimeDxe SMM access control

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in Insyde InsydeH2O up to 5.5 and classified as critical. Affected by this vulnerability is an unknown functionality of the component FvbServicesRuntimeDxe SMM Module. This manipulation causes access control. This vulnerability is handled as CVE-2023-28468. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical was found in Insyde InsydeH2O up to 5.5. Affected by this vulnerability is an unknown part of the component FvbServicesRuntimeDxe SMM Module. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in FvbServicesRuntimeDxe in Insyde InsydeH2O with kernel 5.0 through 5.5. The FvbServicesRuntimeDxe SMM module exposes an SMI handler that allows an attacker to interact with the SPI flash at run-time from the OS.

The weakness was released 08/03/2023. It is possible to read the advisory at insyde.com. This vulnerability is known as CVE-2023-28468 since 03/15/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-32145). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 6.0

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/15/2023 🔍
08/03/2023 +140 days 🔍
08/03/2023 +0 days 🔍
12/06/2025 +856 days 🔍

Sourcesinfo

Advisory: insyde.com
Status: Confirmed

CVE: CVE-2023-28468 (🔍)
GCVE (CVE): GCVE-0-2023-28468
GCVE (VulDB): GCVE-100-236071
EUVD: 🔍

Entryinfo

Created: 08/03/2023 22:10
Updated: 12/06/2025 22:52
Changes: 08/03/2023 22:10 (38), 08/26/2023 09:28 (11), 12/06/2025 22:52 (16)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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