VDB-214223 · CVE-2022-36337 · EUVD-2022-39053

Insyde Kernel up to 5.5 MebxConfiguration Driver stack-based overflow

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.
6.8	$0-$5k	0.89

Summaryinfo

A vulnerability identified as critical has been detected in Insyde Kernel up to 5.5. This impacts an unknown function of the component MebxConfiguration Driver. The manipulation leads to stack-based overflow. This vulnerability is listed as CVE-2022-36337. There is no available exploit.

Detailsinfo

A vulnerability was found in Insyde Kernel up to 5.5 and classified as critical. This issue affects some unknown functionality of the component MebxConfiguration Driver. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. A stack buffer overflow vulnerability in the MebxConfiguration driver leads to arbitrary code execution. Control of a UEFI variable under the OS can cause this overflow when read by BIOS code.

The weakness was presented 11/23/2022. It is possible to read the advisory at insyde.com. The identification of this vulnerability is CVE-2022-36337 since 07/21/2022. The technical details are unknown and an exploit is not publicly 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-2022-39053). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Insyde

Name

Kernel

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

NVD Base Score: 8.2
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / 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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/21/2022 🔍
11/23/2022 +125 days 🔍
11/23/2022 +0 days 🔍
06/17/2026 +1302 days 🔍

Sourcesinfo

Advisory: insyde.com
Status: Confirmed

CVE: CVE-2022-36337 (🔍)
GCVE (CVE): GCVE-0-2022-36337
GCVE (VulDB): GCVE-100-214223
EUVD: 🔍

Entryinfo

Created: 11/23/2022 11:03
Updated: 06/17/2026 12:22
Changes: 11/23/2022 11:03 (38), 12/22/2022 11:03 (11), 04/26/2025 00:29 (16), 06/17/2026 12:22 (1)
Complete: 🔍
Cache ID: 216::103