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CVE-2022-40250

nvd nist
Published: Sep 20, 2022Modified: May 28, 2025

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8.8
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Exploitability: 2.0 / Impact: 6.0
Source: NVD

Description

An attacker can exploit this vulnerability to elevate privileges from ring 0 to ring -2, execute arbitrary code in System Management Mode - an environment more privileged than operating system (OS) and completely isolated from it. Running arbitrary code in SMM additionally bypasses SMM-based SPI flash protections against modifications, which can help an attacker to install a firmware backdoor/implant into BIOS. Such a malicious firmware code in BIOS could persist across operating system re-installs. Additionally, this vulnerability potentially could be used by malicious actors to bypass security mechanisms provided by UEFI firmware (for example, Secure Boot and some types of memory isolation for hypervisors). This issue affects: Module name: SmmSmbiosElog SHA256: 3a8acb4f9bddccb19ec3b22b22ad97963711550f76b27b606461cd5073a93b59 Module GUID: 8e61fd6b-7a8b-404f-b83f-aa90a47cabdf This issue affects: AMI Aptio 5.x. This issue affects: AMI Aptio 5.x.

Affected (3)

Intel
2 products
Nuc M15 Laptop Kit Lapbc510 Firmware
Nuc M15 Laptop Kit Lapbc710 Firmware
Ami
1 product
Aptio V
Configuration A
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Nuc M15 Laptop Kit Lapbc510 Firmware
Version bc0074
Running on/withPlatform Versions
Intel
Nuc M15 Laptop Kit Lapbc510
All versions
Configuration B
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Nuc M15 Laptop Kit Lapbc710 Firmware
Version bc0074
Running on/withPlatform Versions
Intel
Nuc M15 Laptop Kit Lapbc710
All versions
Configuration C
1 vulnerable
Vulnerable SoftwareAffected Versions
Aptio V
Version 5.0

Related CWEs

CWE-121
Stack-based Buffer Overflow
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).
CWE-787
Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.

References (6)

Source: cret@cert.org
Vendor Advisory
Source: cret@cert.org
ExploitThird Party Advisory
Source: cret@cert.org
Not ApplicableThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Not ApplicableThird Party Advisory

Timeline

No history available yet.