Insyde InsydeH2O up to 5.5 UEFI Variable MeSetup denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in Insyde InsydeH2O up to 5.5 and classified as problematic. The impacted element is an unknown function of the component UEFI Variable Handler. This manipulation of the argument MeSetup causes denial of service. This vulnerability is handled as CVE-2023-27471. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Insyde InsydeH2O up to 5.5 and classified as problematic. Affected by this vulnerability is an unknown part of the component UEFI Variable Handler. The manipulation of the argument MeSetup with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. UEFI implementations do not correctly protect and validate information contained in the 'MeSetup' UEFI variable. On some systems, this variable can be overwritten using operating system APIs. Exploitation of this vulnerability could potentially lead to denial of service for the platform.

The weakness was released 08/19/2023. The advisory is shared at insyde.com. This vulnerability is known as CVE-2023-27471 since 03/01/2023. Technical details are known, but no exploit is available.

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-2023-31247). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.8
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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

03/01/2023 🔍
08/19/2023 +170 days 🔍
08/19/2023 +0 days 🔍
11/17/2025 +821 days 🔍

Sourcesinfo

Advisory: insyde.com
Status: Confirmed

CVE: CVE-2023-27471 (🔍)
GCVE (CVE): GCVE-0-2023-27471
GCVE (VulDB): GCVE-100-237541
EUVD: 🔍

Entryinfo

Created: 08/19/2023 08:31
Updated: 11/17/2025 03:42
Changes: 08/19/2023 08:31 (39), 09/13/2023 16:10 (11), 11/17/2025 03:42 (16)
Complete: 🔍
Cache ID: 216::103

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