CVE-2018-5278

Name: CVE-2018-5278
Creator: NVD / NIST
Published: 2018-01-08T05:29:00.697+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.3/10EPSS 0.39%

Last modified Jun 17, 2026

CVE-2018-5278 is a low-severity vulnerability rated 3.3/10 on the CVSS scale. In Malwarebytes Premium 3.3.1.2183, the driver file (FARFLT.SYS) allows local users to cause a denial of service (BSOD) or possibly have unspecified other impact because of not validating input values from IOCtl 0x9c40e00c. NOTE: the vendor reported that they "have not been able to reproduce the issue on any Windows operating system version (32-bit or 64-bit).. EPSS estimates a 0.39% chance of exploitation in the next 30 days.

Description

In Malwarebytes Premium 3.3.1.2183, the driver file (FARFLT.SYS) allows local users to cause a denial of service (BSOD) or possibly have unspecified other impact because of not validating input values from IOCtl 0x9c40e00c. NOTE: the vendor reported that they "have not been able to reproduce the issue on any Windows operating system version (32-bit or 64-bit).

Metrics

CVSS 3.1

3.3/10

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

EPSS Probability

0.39%

30.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Malwarebytes	Malwarebytes	3.3.1.2183

References

https://github.com/ZhiyuanWang-Chengdu-Qihoo360/Malwarebytes_POC/tree/master/0x9c40e00cExploit, Third Party Advisory
https://github.com/ZhiyuanWang-Chengdu-Qihoo360/Malwarebytes_POC/tree/master/0x9c40e00cExploit, Third Party Advisory

Timeline

Published: Jan 8, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-5278?

How severe is CVE-2018-5278?

CVE-2018-5278 has a CVSS score of 3.3/10 (LOW severity). The EPSS model estimates a 0.39% probability of exploitation in the next 30 days.

How do I fix CVE-2018-5278?

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-2018-5278?

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

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Source: NVD / NIST