CVE-2019-14239

Severity: medium (CVSS 6.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2019-09-24 · updated 2026-06-17
Weakness: CWE-287

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

NXP Kinetis K8X Firmware: all versions
NXP Kinetis Kv1X Firmware: all versions
NXP Kinetis Kv3X Firmware: all versions

References

https://www.usenix.org/conference/woot19/presentation/schink
https://www.usenix.org/system/files/woot19-paper_schink.pdf
https://www.usenix.org/conference/woot19/presentation/schink
https://www.usenix.org/system/files/woot19-paper_schink.pdf

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