On NXP Kinetis KV1x, Kinetis KV3x, and Kinetis K8x devices, Flash Access Controls (FAC) (a software IP protection method for execute-only access) can be defeated by leveraging a load instruction inside the execute-only region to expose the protected code into a CPU register
Published Sep 24, 2019
6.6
MEDIUMCVSS 3.1
EPSS 0.40%
Description
On NXP Kinetis KV1x, Kinetis KV3x, and Kinetis K8x devices, Flash Access Controls (FAC) (a software IP protection method for execute-only access) can be defeated by leveraging a load instruction inside the execute-only region to expose the protected code into a CPU register.
Affected products
No data.
Configuration 1
- n/a
Running on/with
- n/a
Configuration 2
- n/a
Running on/with
- n/a
Configuration 3
- n/a
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:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:P/I:P/A:P
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 2, 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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.40% (0.00401) | 32.00th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.40% (0.00401) | 34.15th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.06% (0.00060) | 26.09th | v3 (v2023.03.01) |
| Jun 1, 2024 | 0.06% (0.00060) | 25.34th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00060) | 23.34th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.40% (0.01404) | 49.02th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.74% (0.02742) | 63.06th | v1 |
| Jan 6, 2022 | 2.74% (0.02742) | 62.72th | v1 |
| Jan 5, 2022 | 0.62% (0.00624) | 46.35th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
References (2)
- https://www.usenix.org/conference/woot19/presentation/schink x_refsource_MISCExploitThird Party Advisory
- https://www.usenix.org/system/files/woot19-paper_schink.pdf x_refsource_MISCExploitMitigationThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.usenix.org/conference/woot19/presentation/schink | x_refsource_MISCExploitThird Party Advisory | |
| https://www.usenix.org/system/files/woot19-paper_schink.pdf | x_refsource_MISCExploitMitigationThird Party Advisory |
Change history (0)
No recorded changes yet.