VDB-244401 · CVE-2023-39283 · EUVD-2023-43015

Insyde InsydeH2O up to 5.5 SMM Driver Csmt10HookSmm memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Insyde InsydeH2O up to 5.5 and classified as critical. This vulnerability affects the function Csmt10HookSmm of the component SMM Driver. Performing a manipulation results in memory corruption. This vulnerability is identified as CVE-2023-39283. There is not any exploit available.

Detailsinfo

A vulnerability was found in Insyde InsydeH2O up to 5.5. It has been classified as critical. This affects the function Csmt10HookSmm of the component SMM Driver. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An SMM memory corruption vulnerability in the SMM driver (SMRAM write) in CsmInt10HookSmm in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to send arbitrary data to SMM which could lead to privilege escalation.

The weakness was released 11/03/2023. The advisory is shared at insyde.com. This vulnerability is uniquely identified as CVE-2023-39283 since 07/27/2023. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 216351 (Debian dla-4053 : freerdp2-dev - security update), which helps to determine the existence of the flaw in a target environment.

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 databases at Tenable (216351) and EUVD (EUVD-2023-43015). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Insyde

Name

InsydeH2O

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.6

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 216351
Nessus Name: Debian dla-4053 : freerdp2-dev - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/27/2023 🔍
11/03/2023 +99 days 🔍
11/03/2023 +0 days 🔍
01/24/2026 +813 days 🔍

Sourcesinfo

Advisory: insyde.com
Status: Confirmed

CVE: CVE-2023-39283 (🔍)
GCVE (CVE): GCVE-0-2023-39283
GCVE (VulDB): GCVE-100-244401
EUVD: 🔍

Entryinfo

Created: 11/03/2023 07:27
Updated: 01/24/2026 05:49
Changes: 11/03/2023 07:27 (39), 11/30/2023 14:57 (11), 02/16/2025 01:58 (17), 01/24/2026 05:49 (1)
Complete: 🔍
Cache ID: 216::103

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