Insyde InsydeH2O up to 05.70.49 VariableRuntimeDxe Driver buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Insyde InsydeH2O up to 05.70.49. Affected by this vulnerability is an unknown functionality of the component VariableRuntimeDxe Driver. The manipulation leads to buffer overflow. This vulnerability is traded as CVE-2024-52877. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Insyde InsydeH2O up to 05.70.49. This issue affects an unknown code of the component VariableRuntimeDxe Driver. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in Insyde InsydeH2O kernel 5.2 before version 05.29.50, kernel 5.3 before version 05.38.50, kernel 5.4 before version 05.46.50, kernel 5.5 before version 05.54.50, kernel 5.6 before version 05.61.50, and kernel 5.7 before version 05.70.50. In VariableRuntimeDxe driver, callback function SmmCreateVariableLockList () calls CreateVariableLockListInSmm (). In CreateVariableLockListInSmm (), it uses StrSize () to get variable name size and it could lead to a buffer over-read.

The advisory is shared at insyde.com. The identification of this vulnerability is CVE-2024-52877 since 11/17/2024. The exploitation is known to be easy. Neither technical details nor an exploit are publicly available.

Upgrading to version 05.29.50, 05.38.50, 05.46.50, 05.54.50, 05.61.50 or 05.70.50 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.6

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: InsydeH2O 05.29.50/05.38.50/05.46.50/05.54.50/05.61.50/05.70.50

Timelineinfo

11/17/2024 🔍
05/15/2025 +178 days 🔍
05/15/2025 +0 days 🔍
08/15/2025 +92 days 🔍

Sourcesinfo

Advisory: insyde.com
Status: Confirmed

CVE: CVE-2024-52877 (🔍)
GCVE (CVE): GCVE-0-2024-52877
GCVE (VulDB): GCVE-100-309089

Entryinfo

Created: 05/15/2025 18:02
Updated: 08/15/2025 19:56
Changes: 05/15/2025 18:02 (54), 05/15/2025 18:03 (1), 08/15/2025 19:56 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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