What is CVE-2018-17458?

CVE-2018-17458 is a high-severity vulnerability in Google Chrome, classified under Improper Validation of Array Index. CVSS score: 8.8/10. Published 2019-01-09.

How severe is CVE-2018-17458?

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

Vulnerability in Google Chrome

CVE-2018-17458

An improper update of the WebAssembly dispatch table in WebAssembly in Google Chrome prior to 69.0.3497.92 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.

Published 2019-01-09 · 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: 0.022 (82.0th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000

Affected products

Google Chrome — versions unspecified
Red Hat Enterprise Linux Desktop — versions 6.0
Red Hat Enterprise Linux Server — versions 6.0
Red Hat Enterprise Linux Workstation — versions 6.0

Weakness classification (CWE)

CWE-129 — Improper Validation of Array Index

References

Frequently asked questions

What is CVE-2018-17458?: CVE-2018-17458 is a high-severity vulnerability in Google Chrome, classified under Improper Validation of Array Index. CVSS score: 8.8/10. Published 2019-01-09.
How severe is CVE-2018-17458?: High severity. CVSS v3 base score is 8.8 out of 10.