What is CVE-2018-6055?

CVE-2018-6055 is a high-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2018-09-25.

How severe is CVE-2018-6055?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2018-6055 known to be exploited?

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

Improper input validation in Google Chrome

CVE-2018-6055

Insufficient policy enforcement in Catalog Service in Google Chrome prior to 64.0.3282.119 allowed a remote attacker to potentially run arbitrary code outside sandbox via a crafted HTML page.

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

Published 2018-09-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (65.5th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.5% 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

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2018-6055?: CVE-2018-6055 is a high-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2018-09-25.
How severe is CVE-2018-6055?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2018-6055 known to be exploited?: 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.