The AMD EPYC Server, Ryzen, Ryzen Pro, and Ryzen Mobile processor chips have insufficient enforcement of Hardware Validated Boot, aka MASTERKEY-1, MASTERKEY-2, and MASTERKEY-3
Published Mar 22, 2018
9.0
CRITICALCVSS 3.0
EPSS 1.75%
Description
The AMD EPYC Server, Ryzen, Ryzen Pro, and Ryzen Mobile processor chips have insufficient enforcement of Hardware Validated Boot, aka MASTERKEY-1, MASTERKEY-2, and MASTERKEY-3.
Affected products
No data.
Configuration 1
- n/a
Running on/with
- n/a
Configuration 2
- n/a
Configuration 3
- n/a
Running on/with
- n/a
Configuration 4
- 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:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
AV:N/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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.75% (0.01750) | 77.02th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.75% (0.01750) | 76.83th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.44% (0.00443) | 75.15th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.44% (0.00443) | 74.16th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.44% (0.00443) | 71.71th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.36% (0.00355) | 67.58th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.25% (0.01247) | 30.57th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.25% (0.01247) | 0.00th | v1 |
No CWE recorded.
References (5)
- https://amdflaws.com/ x_refsource_MISCThird Party Advisory
- https://blog.trailofbits.com/2018/03/15/amd-flaws-technical-summary/ x_refsource_MISCThird Party Advisory
- https://community.amd.com/community/amd-corporate/blog/2018/03/21/initial-amd-technical-assessment-of-cts-labs-research x_refsource_MISCVendor Advisory
- https://safefirmware.com/amdflaws_whitepaper.pdf x_refsource_MISCThird Party Advisory
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03841en_us x_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| https://amdflaws.com/ | x_refsource_MISCThird Party Advisory | |
| https://blog.trailofbits.com/2018/03/15/amd-flaws-technical-summary/ | x_refsource_MISCThird Party Advisory | |
| https://community.amd.com/community/amd-corporate/blog/2018/03/21/initial-amd-technical-assessment-of-cts-labs-research | x_refsource_MISCVendor Advisory | |
| https://safefirmware.com/amdflaws_whitepaper.pdf | x_refsource_MISCThird Party Advisory | |
| https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03841en_us | x_refsource_CONFIRM |
Change history (0)
No recorded changes yet.