CVE-2019-14239

Name: CVE-2019-14239
Creator: NVD / NIST
Published: 2019-09-24T19:15:11.333+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.6/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2019-14239 is a medium-severity vulnerability rated 6.6/10 on the CVSS scale. 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.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.6/10

CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.40%

31.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Nxp	Kinetis Kv1x Firmware	All versions
Nxp	Kinetis Kv3x Firmware	All versions
Nxp	Kinetis K8x Firmware	All versions

References

https://www.usenix.org/conference/woot19/presentation/schinkExploit, Third Party Advisory
https://www.usenix.org/system/files/woot19-paper_schink.pdfExploit, Mitigation, Third Party Advisory
https://www.usenix.org/conference/woot19/presentation/schinkExploit, Third Party Advisory
https://www.usenix.org/system/files/woot19-paper_schink.pdfExploit, Mitigation, Third Party Advisory

Timeline

Published: Sep 24, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-14239?

How severe is CVE-2019-14239?

CVE-2019-14239 has a CVSS score of 6.6/10 (MEDIUM severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2019-14239?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-14239?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST