CVE-2018-5271 json
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 un…
published 2018-01-08 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-17051
- cvss
- 7.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 42%
- public exploits
- 0
- none known
Summary
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 0x9c40e008. 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).
Exploit prediction
0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/ZhiyuanWang-Chengdu-Qihoo360/Malwarebytes_POC/tree/master/0x9c40e008 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.1 | AV:L/AC:L/Au:N/C:P/I:P/A:C |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
github.com
/ZhiyuanWang-Chengdu-Qihoo360/Malwarebytes_POC/tree/master/0x9c40e008
exploit, third-party-advisory
-
securityfocus.com
/bid/102471
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2018-5271
- NVD CVE-2018-5271
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.