CVE-2018-5278: malwarebytes Improper Input Validation
Vulnerability summary
CVE-2018-5278 is a high (CVSS 7.8) Improper Input Validation vulnerability in malwarebytes. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 30.9% of scored vulnerabilities. 1 public exploit is recorded.
Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 08-01-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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).
CVSS metrics
4 scores · 2 sources · 3 versions- NVDNIST3.3LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
EPSS trend
Probability
0.39%
Chance of exploitation in the next 30 days
Percentile
31%
Versus all other CVEs
30-day change
0.00 pp
From 0.39% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundMalwarebytes Poc
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Malwarebytes1 product
- malwarebytes3.3.1.2183
1 vendor · 1 product
References
1 links- github.com/ZhiyuanWang-Chengdu-Qihoo360/Malwarebytes_POC/tree/master/0x9c40e00cX Refsource MISCExploitThird Party Advisory