What is CVE-2018-6115?

CVE-2018-6115 is a medium-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2018-12-04.

How severe is CVE-2018-6115?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in Google Chrome

CVE-2018-6115

Inappropriate setting of the SEE_MASK_FLAG_NO_UI flag in file downloads in Google Chrome prior to 66.0.3359.117 allowed a remote attacker to potentially bypass OS malware checks via a crafted HTML page.

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

Published 2018-12-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.011 (63.3th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Google Chrome — versions unspecified

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

chromereleases.googleblog.com/2018/04/stable-channel-update-for-desktop.html
security.gentoo.org/glsa/201804-22 (vendor-advisory)
crbug.com/819809
www.securityfocus.com/bid/103917 (vdb-entry)

Frequently asked questions

What is CVE-2018-6115?: CVE-2018-6115 is a medium-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2018-12-04.
How severe is CVE-2018-6115?: Medium severity. CVSS v3 base score is 6.5 out of 10.