Some Lenovo System x server BIOS/UEFI versions, when Secure Boot mode is enabled by a system administrator, do not properly authenticate signed code before booting it
Published May 4, 2018
6.4
MEDIUMCVSS 3.0
EPSS 0.27%
Description
Some Lenovo System x server BIOS/UEFI versions, when Secure Boot mode is enabled by a system administrator, do not properly authenticate signed code before booting it. As a result, an attacker with physical access to the system could boot unsigned code.
Affected products
-
- Version Affected BIOS version varies by productStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Lenovo Group Ltd. | Some Lenovo Flex System and Lenovo System x products | n/a |
|
Configuration 1
- < 2.61
Running on/with
- n/a
Configuration 2
- < 4.21
Running on/with
- n/a
Configuration 3
- < 4.21
Running on/with
- n/a
Configuration 4
- < 4.21
Running on/with
- n/a
Configuration 5
- < 2.61
Running on/with
- n/a
Configuration 6
- < 2.23
Running on/with
- n/a
Configuration 7
- < 2.61
Running on/with
- n/a
Configuration 8
- < 2.61
Running on/with
- n/a
Configuration 9
- < 2.61
Running on/with
- n/a
Configuration 10
- < 4.3
Running on/with
- n/a
Configuration 11
- < 4.3
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.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:L/AC:M/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.27% (0.00271) | 17.47th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.27% (0.00271) | 19.56th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.07% (0.00069) | 30.62th | v3 (v2023.03.01) |
| Jun 12, 2024 | 0.07% (0.00069) | 30.08th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00069) | 28.07th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.42% (0.00416) | 10.04th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.42% (0.00416) | 0.00th | v1 |
References (1)
- https://support.lenovo.com/us/en/solutions/LEN-20241 x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://support.lenovo.com/us/en/solutions/LEN-20241 | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.