SMM memory corruption vulnerability in OverClockSmiHandler SMM driver
Published Sep 20, 2022
8.2
HIGHCVSS 3.1
EPSS 0.36%
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
Affected products
-
- Version 5.xStatusaffectedConstraints-
- Version
Configuration 1
Running on/with
- n/a
Configuration 2
Running on/with
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed May 28, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.36% (0.00356) | 27.07th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.32% (0.00317) | 23.15th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.02% (0.00024) | 3.77th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00048) | 19.71th | v3 (v2023.03.01) |
| May 4, 2024 | 0.05% (0.00048) | 16.69th | v3 (v2023.03.01) |
| Mar 3, 2024 | 0.05% (0.00048) | 14.68th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.00% (0.01005) | 38.10th | v2 (v2022.01.01) |
| Sep 27, 2022 | 1.00% (0.01005) | 36.61th | v2 (v2022.01.01) |
| Sep 21, 2022 | 2.48% (0.02485) | 80.97th | v2 (v2022.01.01) |
References (2)
- https://www.ami.com/security-center/ x_refsource_MISCVendor Advisory
- https://www.binarly.io/advisories/BRLY-2022-003 x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.ami.com/security-center/ | x_refsource_MISCVendor Advisory | |
| https://www.binarly.io/advisories/BRLY-2022-003 | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.