CVE-2018-5080 — 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 0x830020FC

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HIGH

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 0x830020FC

Published Jan 3, 2018

7.8

HIGH

CVSS 3.0

EPSS 0.40%

Description

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 0x830020FC.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.40% 0.00399

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00399

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (8 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.40% (0.00399)	31.64th	v5 (v2026.06.15)
Sep 20, 2026	0.40% (0.00399)	33.89th	v5 (v2026.06.15)
Jul 20, 2024	0.04% (0.00042)	5.06th	v3 (v2023.03.01)
Mar 7, 2023	0.04% (0.00042)	5.63th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)
Feb 3, 2022	0.28% (0.00276)	2.66th	v5 (v2026.06.15)
Apr 14, 2021	0.28% (0.00276)	0.00th	v1

Weaknesses (1)

CWE-20

Improper Input Validation

References (1)

https://github.com/rubyfly/K7AntiVirus_POC/tree/master/0x830020FC
x_refsource_MISCExploitThird Party Advisory

Link	Providers	Tags
https://github.com/rubyfly/K7AntiVirus_POC/tree/master/0x830020FC		x_refsource_MISCExploitThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Jan 3, 2018

Updated Sep 17, 2024

Reserved Jan 3, 2018

Link CVE-2018-5080

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2018-5080

Red Hat

Severity n/a

Public date n/a

Links CVE-2018-5080