CVE-2022-40250

Name: CVE-2022-40250
Creator: NVD / NIST
Published: 2022-09-20T18:15:10.537+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.43%

Last modified Jun 17, 2026

CVE-2022-40250 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS Probability

0.43%

34.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Intel	Nuc M15 Laptop Kit Lapbc510 Firmware	bc0074
Intel	Nuc M15 Laptop Kit Lapbc710 Firmware	bc0074
Ami	Aptio V	5.0

References

https://www.ami.com/security-center/Vendor Advisory
https://www.binarly.io/advisories/BRLY-2022-016Exploit, Third Party Advisory
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00712.htmlNot Applicable, Third Party Advisory
https://www.ami.com/security-center/Vendor Advisory
https://www.binarly.io/advisories/BRLY-2022-016Exploit, Third Party Advisory
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00712.htmlNot Applicable, Third Party Advisory

Timeline

Published: Sep 20, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-40250?

How severe is CVE-2022-40250?

CVE-2022-40250 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2022-40250?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-40250?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST