What is CVE-2018-5086?

CVE-2018-5086 is a high-severity vulnerability in K7computing Antivirus, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2018-01-03.

How severe is CVE-2018-5086?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2018-5086 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in K7computing Antivirus

CVE-2018-5086

In K7 AntiVirus 15.1.0306, the driver file (K7FWHlpr.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 0x8300215F.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2018-01-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (31.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

K7computing Antivirus — versions 15.1.0306

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

References

github.com/rubyfly/K7AntiVirus_POC/tree/master/0x8300215F (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-5086?: CVE-2018-5086 is a high-severity vulnerability in K7computing Antivirus, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2018-01-03.
How severe is CVE-2018-5086?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2018-5086 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.