CVE-2019-18178

Name: CVE-2019-18178
Creator: NVD / NIST
Published: 2019-11-04T20:15:10.09+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.92%

Last modified Jun 17, 2026

CVE-2019-18178 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Real Time Engineers FreeRTOS+FAT 160919a has a use after free. The function FF_Close() is defined in ff_file.c. EPSS estimates a 0.92% chance of exploitation in the next 30 days.

Description

Real Time Engineers FreeRTOS+FAT 160919a has a use after free. The function FF_Close() is defined in ff_file.c. The file handler pxFile is freed by ffconfigFREE, which (by default) is a macro definition of vPortFree(), but it is reused to flush modified file content from the cache to disk by the function FF_FlushCache().

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.92%

55.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Amazon	Freertos\+Fat	160919a

References

https://sourceforge.net/p/freertos/bugs/199/Exploit, Third Party Advisory
https://sourceforge.net/p/freertos/bugs/199/Exploit, Third Party Advisory

Timeline

Published: Nov 4, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-18178?

How severe is CVE-2019-18178?

CVE-2019-18178 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.

How do I fix CVE-2019-18178?

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-2019-18178?

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

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Source: NVD / NIST