🛡️ CVE-2022-40261
🟠 CVSS 8.2 — High ⚠️ Exploit Public CWE-120 NVD
8.2
CVSS Score
0 Low4 Medium7 High9 Critical10

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: OverClockSmiHandler SHA256: a204699576e1a48ce915d9d9423380c8e4c197003baf9d17e6504f0265f3039c Module GUID: 4698C2BD-A903-410E-AD1F-5EEF3A1AE422

Details

Severity HIGH
CVSS Score 8.2
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE CWE-120
Public Exploit ⚠️ Yes
Source NVD
Published 2022-09-20
Updated 2026-06-08
Modified 2025-05-28
Fix URL N/A

Affected Packages

Software From version Fixed in
aptio-v
nuc-m15-laptop-kit-lapbc510-firmware
nuc-m15-laptop-kit-lapbc710-firmware

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