Vulnerability Monitor

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CVE-2019-14239

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.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.6, with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 6 products from nxp, from nxp, from nxp and 3 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2019, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2019-09-24T19:15:11.333

Last Modified

2024-11-21T04:26:16.327

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.6 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:P/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

6.4

Weaknesses

Type: Primary
CWE-287

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	nxp	kinetis_kv1x_firmware	-	Yes
Hardware	nxp	kinetis_kv1x	-	No
Operating System	nxp	kinetis_kv3x_firmware	-	Yes
Hardware	nxp	kinetis_kv3x	-	No
Operating System	nxp	kinetis_k8x_firmware	-	Yes
Hardware	nxp	kinetis_k8x	-	No

References

https://www.usenix.org/conference/woot19/presentation/schink Exploit, Third Party Advisory ([email protected])
https://www.usenix.org/system/files/woot19-paper_schink.pdf Exploit, Mitigation, Third Party Advisory ([email protected])
https://www.usenix.org/conference/woot19/presentation/schink Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.usenix.org/system/files/woot19-paper_schink.pdf Exploit, Mitigation, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For nxp's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.