PatchTheCVECVE-2019-14237: On NXP Kinetis KV1x, Kinetis KV3x, and Kinetis K8x devices, Flash Access Controls (FAC) (a software IP protect
CVE-2019-14237 is a critical-severity flaw (CVSS 9.8) affecting kinetis kv1x firmware, kinetis kv3x firmware, kinetis k8x firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 observing CPU registers and the effect of code/instruction execution.
Why this priority
- Critical severity
- Public exploit reference
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 2.9% (top 13%) |
| CISA exploited list | No |
| Weakness | CWE-863 |
| Published | 2019-09-12 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2019-14237?
kinetis kv1x firmware: mitigate or apply the listed mitigation; kinetis kv3x firmware: mitigate or apply the listed mitigation; kinetis k8x firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2019-14237 being exploited?
CVE-2019-14237 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2019-14237 affect?
CVE-2019-14237 affects kinetis kv1x firmware, kinetis kv3x firmware, kinetis k8x firmware. Severity is critical (CVSS 9.8). 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 observing CPU registers and the effect of code/instruction execution.
How urgent is CVE-2019-14237?
Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2019-14239 MEDIUM 6.6 MITIGATE MITIGATE On NXP Kinetis KV1x, Kinetis KV3x, and Kinetis K8x devices, Flash Access Controls (FAC) (a software IP protect