What is CVE-2018-4036?

CVE-2018-4036 is a medium-severity vulnerability in Macpaw Cleanmymac X, classified under Improper Input Validation. CVSS score: 5.5/10. Published 2019-01-10.

How severe is CVE-2018-4036?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Improper input validation in Macpaw Cleanmymac X

CVE-2018-4036

The CleanMyMac X software contains an exploitable privilege escalation vulnerability due to improper input validation. An attacker with local access could use this vulnerability to modify the running kernel extensions on the system.

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

Published 2019-01-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (21.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Macpaw Cleanmymac X — versions 4.04
Clean My Mac — versions Clean My Mac X 4.04

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.talosintelligence.com/vulnerability_reports/TALOS-2018-0709 (Third Party Advisory)

Frequently asked questions

What is CVE-2018-4036?: CVE-2018-4036 is a medium-severity vulnerability in Macpaw Cleanmymac X, classified under Improper Input Validation. CVSS score: 5.5/10. Published 2019-01-10.
How severe is CVE-2018-4036?: Medium severity. CVSS v3 base score is 5.5 out of 10.